Gas masks were not created equally. Get an NBC gas mask. You'll need spare filters! Your gas mask must be secured before the attack or exposure. Facial hair will not work with gas masks (and most do not fit children). Remove the plastic filter plug and know how to operate your gas mask. read more
Maybe he owns it in the event of a gas attack for god knows what reason. I don't think I'd panic over someone owning a gas mask, and if anything it doesn't hurt to ask him why he owns it. Non-military people owning a gas mask is a normal thing I'd imagine. Maybe if he had an armory as well that might change things, but even then it just depends. read more