why would anyone waste their money on gas masks. just spend 50 cents on a cigarillo and learn how to french inhale. its the same thing. and if you smoke outside french inhale and use your hand like a gass mask. french inhaling gets you high as fuck espeacially when you can get nasty with it, and it makes it easy on your throat. just make sure you fill your mouth up alot and i do not mean by inhaling. and make sure you push the smoke out with your mouth. you wont get it real good the first time. but with practice it will be very rewarding trust me