ive used a gas mask once, it was for 420 in 2009. i was fukin dumb as hell after words, had trippy vision, couldent talk to well., and if u werent hittin the gas mask their was a 3 blunt pass goin on. but yea i stunk afterwords, im 18 and my mom has kicked me out before cus i come home sometimes smellin like MJ. our solution?? we made a giant 4 ft long by 1/2 ft wide pipe outa PVC. But a bowl piece on top & now we use it for roaches about 3X a week. we always have like 6 or 7 roaches whenever we go nd we just get dumb as hell. the things so massive it takes 2 people to use, one person holds the open end to their chest and lights it, nd the victim just in hales from the other end. it looks like some sort of ritual whenever we bring mad people over and one person just runs around given out hits lol