Best Gas Masks | Tested & Expert Reviewed

Air is one of those things you can’t live without for very long. It’s an often overlooked part of preparedness and safety, even though it is one of our biggest vulnerabilities. Filters and gas masks have become an integral part of protecting the air we breathe.

In the military, I trained extensively at chemical defense facilities and tried dozens of masks to learn what makes them reliable, comfortable, and effective. I traveled the globe and worked with international CBRN teams, putting gas masks to their limits in a variety of conditions and environments.

My top recommendation is for the MIRA CM-6M, a bromobutyl rubber mask that’ll tackle most CBRN threats at a reasonable price.

If you are looking for a less expensive mask that’ll work for most tasks, I suggest the 3M 6800 for its affordability and also its dependability. I also share upgrade and surplus options that have both been proven in the military.

---

Contents (Jump to a Section)

• Best Gas Mask
• Best Industrial Mask
• Upgrade CBRN Mask
• Best Military Surplus Mask
• Comparison Table
• How I Tested
• Why Trust TruePrepper
• What to Look For
  • Value: Cost vs. Benefit
  • Effectiveness
  • Durability
  • Comfort
  • Versatility
• Mask Rating Types
  • NIOSH Rating
  • MIL-SPEC Rating
• How to Fit Test a Mask
  • Negative Pressure Test
  • Hood & Smoke/Oil
  • Portacount
  • Other Mask Fit Considerations
• Additional Gear Needed With a Gas Mask
  • Filter Recommendations
  • Body Coverage
• Troubleshooting, Maintaining, & Inspecting
• Who Needs a Gas Mask?
• Scenarios to Use a Gas Mask
• Survival Kits that Need Gas Masks
• Gas Mask Limits
• Sources & References
• Conclusion

Our latest update of the best gas masks added new selections, updated test results, and more pictures.

---

Also available to buy at Amazon.

Mira Safety has been on a tear in the international market, becoming the mask of choice for many countries simply due to its cost-effectiveness. The masks they make are durable and proven, and the CM-6M hits the sweet spot of features at a reasonable cost.

Specifications

• Sizes: One size fits all (mostly)
• Seal Material: Bromobutyl rubber
• Visor: Polycarbonate, 78% FoV
• Head Harness: 6-point adjustable web straps
• Filters: 1-2 40mm NATO filters (not included- you can run a single can as well)
• Features: Hydration system
• Weight:
• Weight With Filter: 30.4 ounces (40mm Mira NBC-77SOF filter)

With a bromobutyl rubber construction and dual canister filters, this mask feels very similar to the well-known M50. Their masks are re-branded versions of Czech masks with additional certifications so that they can sell them to international militaries and law enforcement agencies.

CM-6M Pros & Cons

Most of the great things about this mask are tied to the company that sells it. They support the mask with a wide variety of 40mm filters and accessories, including a spectacle kit if you wear glasses. It’s a bromobutyl construction that can tackle the whole suite of CBRN threats at a competitive price that matches top-end industrial masks. This specific model has the widest field of view lens that resists fogging very well.

Drawbacks include the heavy 40mm filters (especially if you decide to run two) that are side-mounted. Over time, you can feel the filter weight since it is off-center, as most 40mm filters weigh between 10 and 15 ounces.

I prefer the Mira NBC-77SOF filter to take advantage of the full-spectrum protection, but you can find cheaper filters and filters designed for specific situations in our Filter Recommendations Section.

Grab the MIRA CM-6M Gas Mask and some filters for your kit, and don’t look back.

---

You may encounter some people who say this respirator isn’t technically a ‘gas mask’, and they aren’t wrong. This respirator from 3M uses a silicone face mask, so it’s not going to help you that much if you encounter a blister agent like mustard gas. However, it will help you with pretty much anything else when you fit it with organic vapor filters.

Specifications

• Sizes: M, L (Medium fits most- including my big face/head)
• Seal Material: Silicone rubber
• Visor: Polycarbonate visor, 80% FoV
• Head Harness: 4-point adjustable silicone straps
• Filters: Twin 3M bayonet filters
• Weight: 15.3 ounces
• Weight With Filters: 22.7 ounces (2x 3M 60926 filters)

Even without vapor cartridges, most hazards can be addressed with an industrial mask, including tear gas, fallout particles, and most biological threats. This mask is the best of the industrial options, using widely available filters so you can protect yourself with it or get some projects done around the house.

6800 Pros & Cons

The feel and vision of the mask reminded me a bit of the MCU-2 flight crew mask, as it doesn’t have the weight distribution of a single bulky 40mm filter and has a huge field of view. Luckily, the silicon mask is not prone to separating like the MCU-2/P eventually did.

The main drawback of this mask from a design standpoint is the silicone straps, but they have held up during my testing and adjust easily. These are expected on industrial masks, though.

The proprietary 3M bayonet filters would be a drawback if there weren’t so many abundant alternatives. Companies like Parcil Safety and others have filters with the same design that can easily slot into the 3M 6800 mask.

Lastly, there isn’t a CBRN filter solution for this mask- it isn’t designed for it anyway. Even still, putting on a pair of 3M 60926 filters will protect you from most threats.

The 3M 6800 Full-Face Respirator is a solid industrial mask for your personal protection kit.

---

The C50 by Avon Protection is the civilian equivalent of the M50 that the military deploys, but it uses the much more widely available 40mm NATO filters. It is quite a bit more expensive than other masks on the market, but it offers unparalleled protection.

Specifications

• Sizes: S, M, L (M fits most ~95%- including my big head)
• Seal Material: Chlorobutyl rubber
• Visor: Polycarbonate with inserts, 96% FoV
• Head Harness: 6-point adjustable web straps
• Filters: 1-2 40mm NATO
• Features: Hydration system
• Weight: 17.3 ounces
• Weight With Filter: 30.2 ounces (40mm Avon CBRNCF50 filter)

It can be a bit confusing with the M, FM, and C versions all available (and the M50 also goes by JSGPM). The M50 and FM50 (essentially the same mask) use military-style bayonet lug filters for rapid changes. The filters are lighter weight, more face-conforming, and meant to be worn in pairs.

The C50 uses standard NATO 40mm filters, which are easier to find and come in a much wider variety. The C50 has slowly overtaken the M50 in our review, due to filter price, variety, and availability.

C50 Pros & Cons

The Avon C50 and its variants have been the top-in-class gas mask for over a decade now. The rugged chlorobutyl rubber is unmatched in protection, and the design is comfortable and accommodating for a wide range of face sizes.

I’m glad I had such a solid mask to introduce to the military during training, because it was easier to use and easier to breathe through than the MCU-2P and M-45 predecessors.

The downside to the Avon mask is the price- it costs close to 5 times as much as a reputable industrial mask. The branded filters and accessories also cost much more than other masks, making the entire kit a heavy investment unless you look at used masks or surplus.

I pair mine with a Mira NBC-77 SOF filter for best-in-class CBRN protection.

If you want the best mask for your kit, an Avon C50 Gas Mask is the way to go.

---

The Israeli Defense Force (IDF) has been fielding the M15 for over 50 years, making it one of the oldest masks still trusted and deployed today. Not only is this a testament to its effectiveness, but it also brings a large number of unused CBRN-rated masks into military surplus.

Specifications

• Sizes: 1 (Large- fits most adults), 2 (Medium), 3 (Small/Youth)
• Seal Material: Chlorobutyl rubber
• Visor: Polycarbonate lenses, 85% FoV
• Head Harness: 5-point adjustable rubber straps
• Filter: 40mm NATO
• Features: Hydration system
• Weight: 17.3 ounces
• Weight With Filter: 30.2 ounces (40mm Avon CBRNCF50 filter)

The size system is a bit different than other gas masks- most adults will look for size 1 (Large), rather than size 2 (Medium).

M15 Pros & Cons

The M15 is about as inexpensive as you can get with a new CBRN-rated military gas mask. It features chlorobutyl rubber, which gives you the longest operating time in a contaminated environment.

It also includes a hydration system and accepts 40mm filters, making it tolerable for longer periods and easy to stock filters for. The voice emitter is large and reverberates well, which helps you communicate more effectively from the mask.

One downside of the mask is the filter placement in the center, and the blind spot the lenses create above your nose.

The mask is an old design, but it is an upgrade to the circle-lens Model 4 Israeli mask, which was a variant of the German Dräger Simplex. Make sure that you don’t confuse the two if you are shopping in person at a military surplus store looking for an ‘Israeli Gas Mask’.

Grab an unused Israeli M15 Gas Mask from military surplus if you want to be marginally ready for a worst-case scenario.

Expert Tip: Although new, the mask you receive may be old. No surplus dealer will claim that these masks will protect you. Inspect the mask yourself on arrival, and at the very least, get a new 40mm filter.

---

Comparison Table

Gas Mask	Recommendation	Price*	Type	Seal Material	Filter Type	Weight w/ Filter
Mira CM-6M	Best Overall Gas Mask	$276	CBRN	Bromobutyl rubber	NATO 40mm	32.1 oz
3M 6800	Best for Household Use	$127	Industrial	Silicone rubber	3M bayonet	22.7 oz
Avon C50	Best for Full-Spectrum CBRN	$587	CBRN	Chlorobutyl rubber	NATO 40mm	30.2 oz
Israeli M15	Best Military Surplus Mask	$135	CBRN	Bromobutyl rubber	NATO 40mm	43.2 oz
HANUU		$46	Industrial	Silicone rubber	NATO 40mm	37.3 oz
Parcil PD-100		$120	Industrial	Silicone rubber	Parcil bayonet	20.5 oz
Parcil PD-101		$120	Industrial	Silicone rubber	3M bayonet	22.7 oz
Parcil ST-100X		$140	Industrial	Silicone rubber	NATO 40mm	26.9 oz
Mira CM-I01		$160	Industrial	Silicone rubber	NATO 40mm	20.1 oz
Honeywell North 5400		$167	Industrial	Silicone rubber	Honeywell bayonet	25.6 oz
Parcil NB-100		$240	Industrial	Silicone rubber	NATO 40mm	28.4 oz
3M FF-402		$249	Industrial	Silicone rubber	3M bayonet	25.6 oz
Mira CM-7M		$290	CBRN	Bromobutyl rubber	NATO 40mm	28.8 oz
Honeywell North 7600		$329	Industrial	Silicone rubber	Honeywell bayonet	36.8 oz
Mira CM-8M		$340	CBRN	Bromobutyl rubber	NATO 40mm	30.2 oz
MSA Advantage 1000		$509	CBRN	Hycar rubber	MSA bayonet	20.2 oz
Avon M50		$657	CBRN	Chlorobutyl rubber	Avon bayonet	30.4 oz

---

How I Tested

Our research narrowed the field down to several gas mask brands and types that we tested: 3M, Avon, Honeywell, MIRA, Parcil, MSA, older masks (M-45, M-40, MCU-2P, Israeli, GP-5, MP5, etc), and more.

Here is how I tested the gas masks:

• Effectiveness: I conducted a QFT (Quantitative Fit Test) for each mask using an Allegro hood and irritant smoke.
• Comfort: I went on a 1-mile trail hike wearing each mask and a backpacking pack.
• Durability: Our team measured the gas masks with and without filters on digital scales and measured material thickness with micrometers and calipers.
• Versatility: I drank through the integrated hydration systems of each mask (when present), and sighted a rifle with a cheek weld to check for lens/filter interference.

Going beyond the easy negative pressure check for fit testing, the QFT, using a hood and irritant smoke, is a military and industrial standard for protective masks.

---

Why Trust TruePrepper

I know how a solid mask with a good fit can save your life from direct experience. Sometimes the little things about the mask make the biggest difference. The gas mask’s field of view and how easy the filters are to breathe through can make accomplishing tasks a world of difference.

I’m Sean Gold, and I was an Emergency Manager in the US Air Force. This allowed me to travel the globe, teaching people how to use various types of gas masks, along with other disaster-related training.

I have plenty of experience using the MCU-2P, M50, Firehawk, and the 6800 in life-threatening environments. I’ve also had my hands on both Israeli masks, M40, M17, Land Warrior, Czech M10, Dragr PAPR 4500, Soviet GP-5, and some relic masks from WWI.

Switching my classes from the MCU-2P to the M50 made a world of difference in the number of heat exhaustion incidents we had in the desert. The drinking tube attachment on the military masks helped with this, too.

---

What to Look For

The best gas masks have several important features to look for. We weighed these options to develop our scoring system and to make comparisons across the brands and types easier to view.

1. Value
2. Effectiveness – 30% of the overall score weight
3. Comfort – 30% weight
4. Durability – 20% weight
5. Versatility – 20% weight

When you get the right blend of these, you can find reliable gas masks that will keep you protected through a CBRN emergency. Below, we break down what each of these features means for truly dependable masks that you can trust with your life.

We did not consider any powered or supplied air options, although some of our selections allow those modifications. PAPR masks and attachments are in their own review: Best PAPR | Powered Air Purifying Respirator.

We also did not consider half-masks or paper NIOSH respirators. We recently did another review on the best N95 masks using much of the same testing equipment.

Value: Cost vs. Benefit

The amount of money you spend on something like gas masks shouldn’t blow out your budget. Having one is better than having none, but the same applies to other tools and gear you may need for an emergency. Budget according to your risk and your needs, rather than just spending lavishly.

On the flip side, you definitely don’t want to go the cheap route on a mask. If you are buying used, be skeptical of a mask’s seal and inspect it thoroughly before planning to use it in your kit. If you’re buying something brand new that is cheaper than our options, good luck trusting it with your life!

*Price at the time of the latest update.

Still, you never want to spend too much money on one resource, especially something like masks. It’s better to diversify your tools and preparedness gear to make sure you are covered for a wide range of scenarios.

There is a sweet spot where you get high value out of the best features with not too high a price, which is where our top pick sits.

Effectiveness

A gas mask’s effectiveness is a combination of many factors, including the rubber material and thickness, lens material and thickness, canister type, airflow design, and even how well it fits.

Bromobutyl and chlorobutyl rubber are some of the best materials as they are resistant to blister agent chemical weapons, whereas many other types of rubbers are not (including silicone).

Polycarbonate lenses are pretty standard, and protective inserts can increase longevity and prevent scratching on these. Larger lenses can also increase your field of view, which is why industrial masks (3M 6800, Parcil PD-101) and aircrew masks (MCU-2P) opt for the large single lens.

The canister for a gas mask varies and directly affects how effective your mask can be. 40mm NATO canisters are commonly found, and NIOSH bayonet filters for 3M masks are also very common.

Both come with multiple options depending on which type of material you are trying to filter. Typically, you will want the maximum level of protection out of your canister to maximize the effectiveness of your mask.

While all masks offer some level of protection against viruses and radioactive particles when they are correctly worn, their effectiveness against chemical weapons can vary. (Learn more about the chemical weapon threat profile here.)

None of the selected masks will help you breathe in an oxygen-depleted environment, like heavy smoke, confined spaces, underwater, etc. To handle those scenarios, your mask will need further modifications with a Self-Contained Breathing Apparatus (SCBA).

Durability

Oils from our faces and hands, dust, hot and cold temperatures, and masks getting mashed up in the case all take a hard toll on a gas mask. The quality and construction of a mask can help it handle all of these, with the materials and thickness mattering most.

The material of the mask affects its durability over time, as well as the quality of the construction. Many masks throughout history have shown issues with delaminating parts (MCU 2-P), so quality is a prime concern when it comes to durability.

How you treat your mask also affects its durability. Don’t expose any mask to alcohol (cleaning wipes) or other harsh chemicals. Wash it with warm, soapy water when you need to.

Comfort

Comfort is an underrated aspect of a gas mask because people always seem to underestimate how long they will need to wear the mask. Some gas masks come in various sizes and can improve how comfortable a mask is (and make it fit properly!) Some can swap out components, like nose cups.

Industrial masks can be very comfortable until you are wearing them for long periods without access to water, which limits their comfort rating. Drinking tubes may add versatility to a mask, but they add a bit of comfort needed to actually survive.

The head harness type can also be a comfort factor. Webbing-style harnesses are quicker to stretch over your head and tighten with just the bottom straps. The silicon straps from our starter pick can easily pull longer hair.

The airflow of the canister can affect how comfortable you are in a mask. Restrictive canisters can make the mask hot and harder to breathe through unless you have multiple canisters.

Weight

The weight of the masks with a filter attached affects comfort significantly. The balance of the mask factors in as well, but heavier masks are a good indication that the user will get uncomfortable in the mask in a much shorter period.

Because manufacturers often show the weight of just the mask itself without filters, I weighed each mask with the standard filter attached to compare the actual worn weight.

Versatility

Most of our picks have accessories that you can get to add versatility to the mask, including (but not limited to):

• extra canisters and/or different application canisters
• carrying cases
• lens protection (and covers for various applications)
• voice emitters
• mics for radios
• glasses inserts
• drinking straws with canteen conversions
• hoods for overpressure
• sized parts (nose cups)
• replacement parts

Having the right combination of accessories with your mask will give you some added versatility and/or make the mask much more effective for your specific situation.

---

Mask Rating Types

There is some misinformation out there as to what actually counts as a gas mask. “Gas mask” is just a term for a full-face respirator equipped to handle chemical gas hazards. There are full and half-face respirators that only handle particulates, but the full-face masks with the correct filters are considered gas masks. Just like there are many models of gas masks developed over the years, there are also several ratings for both masks and filters.

Ranging from MILSPEC to NIOSH/OSHA requirements, these ratings can let you know what kind of protection you can expect from a mask. If a mask does not meet any standard or requirement, you should probably look elsewhere. If a mask or filter doesn’t have a rating, it could be a prop mask, a costume mask, or even for airsoft. Make sure you have a real mask and filter with a real rating. Mask filters can have many ratings, but here are the important ones for survival and prepping purposes:

1. NBC rating: The filter is verified and rated to withstand Nuclear, Biological, and Chemical threats for at least 8 hours.
2. CBA/RCA rating: The filter is verified and rated to withstand Chemical Blowing and Riot Control Agents for at least 8 hours.
3. Specialty ratings: There are other ratings where a filter can be rated to protect from a specific NBC or HAZMAT threat.

Mask ratings are complex, but can be broken down by who approved them.

NIOSH Rating

NIOSH gives us the widely known rating of N95, which can be found on the small cloth masks used extensively in the medical field and other applications. Most gas masks fit the N95 rating, which simply means they filter out 95% of airborne particles.

The rating is good for the elastic band mouth covering, but it does not mean much if you are looking for complete protection. The NIOSH ratings can be more easily understood with a table:

Rating Letter Class	Rating Number Class
N – Not oil resistant	95 – Removes 95% of all particles
R – Resistant to oil	99 – Removes 99% of all particles
P – Oil-Proof	100 – Removes 99.97% of all particles (HEPA)

These letters and numbers combine to give the rating, so P100 is one of the best ratings NIOSH gives respirators. This shows that an N95 mask is better than nothing, but definitely not the best solution in life-or-death situations.

MIL-SPEC Rating

The main MIL-SPEC rating associated with gas masks is the PRF-EA-10003 rating. This encompasses the NBC and CBRN protection factor, combined with how the mask withstands abuse in the field. It is an aggressive rating that only one mask has achieved: the M50 JSGPM (Joint Service General Purpose Mask).

As you can see, masks themselves are rated to MIL-SPEC or NIOSH penetration standards, but filters are rated to the actual threat. Plenty of people say, “This mask is NBC-rated”, which is a misconception because the filters are actually rated, and the mask is NIOSH and possibly MIL-SPEC rated.

---

How to Fit Test a Mask

Unlike a hat or clothing, medium-sized gas masks usually fit a wide range of people. Masks need to fit your face, and your head size does not matter as much since the straps are usually adjustable. Small children and those with smaller faces will need a small mask or a specially developed infant mask. Large masks are rare but are needed by a few with very large faces. A staggering 90% of adults will fit in a medium gas mask. Even if you have a mask that is the proper size does not mean it fits.

Proper fitting ensures that the mask has created a seal with your skin and that your breathing is creating positive pressure within the mask. Here are the 3 main ways people fit-test a gas mask.

Negative Pressure Test

This test doesn’t require any equipment and has some easy-to-follow steps to make sure you have a good fit:

1. Loosen the mask straps completely and pull them over the front of the mask and out of the way.
2. Roll the mask on, planting your chin firmly in the chin cup first and then seating the nose cup in place.
3. Hold the mask in place while you pull the straps over the back of your head.
4. Tighten the straps. If there are multiple straps, tighten the middle first, then the top, and then the bottom straps last.
5. Check the seal of the mask by covering the filters with your hands and inhaling sharply. The mask should pull in slightly and not allow any air in. If it does not, re-fit your mask by following steps 1-4 again.
6. Remove the mask by only loosening the bottom straps and pulling the chin cup out and over your face.
7. Store the mask with straps over the front for rapid access. Store the mask with straps inside the mask for longer periods to prevent the straps from stretching and wearing out.

A few reasons a mask may not fit are due to the sizing. The full-face mask may have different sizing options, as well as the nose cup. Some variants, like the M50 or 6800, offer a variety of nose-cup and facemask combinations to ensure the best comfort in the mask.

Most people will use the negative pressure test step 5 after they put on the gas mask to quickly make sure the mask is seated correctly. If you use a mask in high-threat or industrial environments, you’ll need a better test for your initial fitting.

This method was good enough when I trained class members in a practice environment using CS (tear gas).

Hood & Smoke/Oil

Banana oil/isoamyl acetate is often used by professionals to ensure a good fit. You can grab some ampules for very cheap online that are great for breaking open with your mask on. If you can smell it, then you have a gas mask fit issue- pretty straightforward.

To keep the banana oil isolated around your head, plastic hoods or large upside-down ‘bowls’ are used to trap the gas.

We used this method when we trained with live high-risk chemical agents to ensure our masks fit tightly, and I used a hood and smoke irritant to test all of the masks for this review.

Portacount

Portacount Respirator Fit Test Machines will set you back over a grand when they are new. It is one of the only quantitative fit tests out there, and many agencies rely on it to set standards for mask fit. I didn’t actively use one, but was measured dozens of times by the Bioenvironmental Engineers (BEEs) and found the machines finicky at times.

I certainly wouldn’t recommend the equipment for home use, but some high-risk environmental jobs call for these to keep safety records, making sure PPE is a good fit for anyone wearing a respirator of any sort.

Other Mask Fit Considerations

Guys should note that beards do not cooperate well with gas masks getting a good seal. A hygiene kit with shaving equipment can come in handy in the event of a pandemic or CBRN situation. Trust us, we’ve looked into beards vs gas masks zealously, and beards are best dealt with just shaven off.

Poor vision can also be problematic with gas masks. To deal with this, you can source gas mask inserts, which are glasses meant to snap into place inside a gas mask. Those in the military and in jobs that require masks are often issued inserts.

If you don’t have access to an optometrist who can source inserts for your gas mask, some clever preppers have used old glasses, removed the glasses’ arms, and secured them to the mask lens with duct tape for a temporary solution. You cannot use glasses with the arms on them, or they will disrupt the seal where the arms go through the mask.

---

Additional Gear Needed With a Gas Mask

A gas mask is great for protecting your face and your respiratory tract, but what about the rest of your body, your home, and even your equipment?

A mask should be supplemented with key supplies and accessories to complete the protective outfit. You should include:

• Full-body Coverage: We’ve reviewed HazMat suits, but any coverage is better than exposed skin.
• Sealing Tape: ChemTape is the clear choice. Duct tape can theoretically work, but it is not recommended.
• Gloves: Thick rubber is best, but nitrile gloves can work in a pinch.
• Boots: Chem boots, over boots, and galoshes are best.
• Canteen: and Gas Mask Compatible Straw
• Filters: Depending on your mask and filter type, you may need a lot of spare filters.
• Gas Mask Carrier: Don’t squish your mask in a combined kit.
• Hygiene Kit with Razors: For men to remove beards- here is our survival razor review.
• Eyeglass Inserts: Don’t go blind, and don’t break your seal with traditional glasses
• Fit Check Ampoules: Irritant smoke gets it done.
• Filters: Depending on your mask and filter type, you may need a lot of spare filters.

Let’s dig into the filters just a bit.

Filter Recommendations

There are many kinds of filters, but some standardized options are out there, too. Our suggestions use two of the most common filter types.

Here are the best filters to select based on how you plan to use your mask:

Use Case	40mm Filter	3M Bayonet Filter
Household (Dust/debris/mold)	NIOSH P100	3M 60921
Riot Control (CS/CN/OC)	Mira P-CAN	3M 60926
Full-Spectrum CBRN	Mira NBC-77 SOF	N/A
Smoke Escape	Mira VK-530	3M 60923

Body Coverage

You can cover your body with clothing, a HAZMAT suit, or specialized CBRN Gear.

If you are using regular clothing, rain gear can work well. Rain jackets, ponchos, and other less-permeable clothing that drapes over your body can help reduce exposure.

Whole-body coveralls are great for lower-risk threats, such as use around the home or with riot control agents.

The specialized gear can be difficult to use for extended periods and requires decontamination supplies. I would recommend a CBRN poncho over a HAZMAT suit, because it’s easier to operate in and more versatile.

---

Troubleshooting, Maintaining, & Inspecting

Most gas masks are tough, but some problems could occur if they are not cared for properly. The rubber and silicone can come off the facemask. Straps can dry rot; metal components can rust and degrade. Masks can deform if stored improperly. Many older masks and military surplus masks have issues with yellowing lenses.

The point is that gas masks are not fail-proof, and you have to take care of them to keep them in serviceable condition. This is one of the reasons why new masks are the way to go when buying a gas mask.

Troubleshooting a gas mask is relatively easy. If a mask is difficult to breathe through, replace the filter and see if it improves. If it does not, you should look at the inlet valve behind the filter(s) to determine if there is debris or a problem in the operation.

When positive pressure from exhaling is causing your mask to ‘unseat,’ you may have an issue with your outlet valve.  If you are having a problem with the mask having or keeping a seal, you should follow or mask fit instructions above. If these steps do not fix the problem, inspect the mask for disbonding as described below.

Maintaining a gas mask is easy, too. Keep your mask debris-free and wash it after use, even if it is not contaminated. Use a warm, soapy water solution to wash the mask after removing the filters and head harness.

Do not use bleach or alcohol wipes since they will damage the yellow mask lenses and the silicone and bonding material.

Inspecting a gas mask can save your life. Gas masks aren’t bulletproof as far as problems go, and sometimes they can be hidden. Run your finger along each bonded seam in your mask, looking for signs of separation. Inspect filter attachment areas for cross-threading if applicable.

If your mask has metal components, look for signs of rust or corrosion. If you run across any of these red flags, the mask should be cut across the face shield and discarded as unusable.

---

Who Needs a Gas Mask?

Whether or not you need a mask depends on the risk level you are willing to accept. You can find more about generalized risk in our Threat List, which lays out the standard risks for most people in the United States. This is based on data and generally accepted best practices for risk analysis.

If you aren’t looking to dive in too deep, gas masks are usually essential for people who fall into any of these categories:

• proximity to a nuclear facility
• proximity to a military facility

They are highly suggested for people who:

• live in densely populated urban areas
• live downwind (according to prevalent wind charts) of nuclear and military facilities

For everyone else, a gas mask is simply an upgrade from a standard filter mask, given that your chances of encountering a CBRN threat or rapid viral spread are lower. However, most people fall into a category listed above.

Of course, you can always use masks for things beyond the threats above, too, like concealing your face/identity or as a dust mask. Gas masks are more versatile than you may realize and warrant consideration for anyone who can afford one.

---

Scenarios to Use a Gas Mask

A few acronyms that are commonly used that show where a gas mask may be needed include:

• NBC – Nuclear, Biological, Chemical
• CBRN – Chemical, Biological, Radiological, and Nuclear

These describe events or attacks (NBC is the older term, and CBRN is the newer) where a gas mask and other specialized personal protective equipment, especially, come in handy.

Masks also come in handy when you are dealing with falling ash (volcanoes, fires), high pollution, riot agents (tear gas, pepper spray), and even around the house (mold, paint, etc).

An approved and functional gas mask protects against all of the scenarios above in most situations where they would occur. Protecting your airway is a priority in each of these since they are most susceptible to exposure. It is important to put on your own mask before assisting others. Otherwise, you could be quickly incapacitated and unable to help anyone.

---

Survival Kits that Need Gas Masks

You can include a gas mask in almost any survival kit. Some survival kits make a whole lot more sense than others, though. A simple N95 mask may be acceptable to include in a lightweight Get Home Bag or Bug Out Bag. Here are some specialized kits that really should include a gas mask for each member of your family:

• Pandemic Kit
• NBC (Nuclear, Biological, and Chemical) Kit
• HAZMAT Kit
• Nuclear Survival Kit
• SCARE Kit

If you require one of these kits based on threats in your area, then you should include a gas mask in it. You can learn more about identifying threats in our Threat List, which breaks down risk as simply probability and impact for possible scenarios and rates them with a Threat List score. Additional kits that could include a gas mask, but are not necessarily standard, are:

• Home Survival Kit
• Get Home Bag
• Bug Out Bag

Gas masks are usually not practical for Everyday Carry (EDC) use due to their size, weight, and public perception. A hygiene kit with shaving equipment is a good idea to keep close to a mask, since beards can prevent a gas mask from sealing, making it useless.

---

Gas Mask Limits

Gas masks are not the easy cure-all for everything that could happen. There are plenty of situations where a gas mask cannot help. Here is a quick list to keep in mind as you get your mask ready for your survival kit:

• A standard gas mask cannot supply oxygen in an oxygen-depleted environment.
• They are not meant as a protective covering for ballistics or debris.
• Masks can provide a false sense of security if worn improperly or if you have the wrong type.
• Gas masks can increase the chance of heat exhaustion.
• You cannot eat or drink in a gas mask (unless it is equipped with a drinking tube and adapter).
• Some masks limit your vision.
• Some masks are more difficult to breathe through, making physical activity difficult.
• If you have a beard, a gas mask will not seal correctly.

If you keep these drawbacks in mind, gas masks are still useful and can save your life. It is better to be prepared and not need a gas mask than to need one and not have one.

Gas Mask Vaseline Test for a Beard Seal

---

Sources & References

All of our experience and the testing we do to determine the best gas mask is useless without listing our research sources and references. We leaned on these for the book knowledge that we paired with our hands-on testing and practical military and prepping experience:

Faith, T. (2014). Behind the Gas Mask: The U.S. Chemical Warfare Service in War and Peace. University of Illinois Press. (Source)

Fridlund, M. (2002). Keep Calm and Carry One: The Civilian Gas Mask Case and Its Containment of British Emotions. Mattering Press. Pages 425 – 440. (Source)

Waitt, A. (1942). The Gas Mask: The Great Problem in Protection Is Training, Discipline, and Organization. The American Journal of Nursing. Volume 42. Issue 7. Pages 748 – 753. (Source)

---

Conclusion

I hope that by now you feel like an expert on anything and everything mask-related. It felt like a trip down memory lane getting this information together since I have taught thousands about the benefits, use, and upkeep of gas masks. Just getting a mask is not enough- you need to know how to use it, keep it in good condition, and understand its limitations.

Whether you are staying put to bug in or hitting the road to bug out, a gas mask should be a consideration for your survival kit. Certain situations, like proximity to a military base or nuclear facility, increase your need for a mask.

To go along with a solid gas mask, you should also consider a few other CBRN survival items:

• The Best Geiger Counter for Prepping and Survival
• The Best Iodine Tablets for Nuclear Fallout Radiation
• Nuclear Survival Kit List | 16 Essential Items

See more of our expert-written guides, resources, and reviews in your search results – add TruePrepper as a preferred source.

---

Prepping Your Way

No judgement and no imperatives. Prepare the way you want to with the trusted source millions of modern preppers have relied on.

Our newsletter fires out every Monday where you can expect:

• Practical prepping guides and tips
• Thorough survival gear reviews
• Noticeably absent spam and popups
• < 0.4% of people unsubscribe

Thanks for subscribing, supporting our cause, and improving your own resilience.

---

• Instagram
• Facebook
• TikTok
• X Twitter
• YouTube
• Pinterest