Quote Originally Posted by 1DisneyNut View Post
Gas masks only filter breathing in and just simply vent out don't they? For coronavirus they say masks work the best when those infected but don't know it yet are wearing them to catch the particles they breathe out. I guess the guy wearing the gas mask is protecting himself very well from potentially breathing it in and catching it but if he were to get infected and be breathing it out, he would be spewing it everywhere even with the gas mask on.
Depends on the gas mask. Military grade, one way in and out.