Kind of funny, seeing as if you actually did do research you would know that not only is there no evidence that it works there is also no evidence that it's not hurting people or even worse killing them. Coming sense would tell you that breathing in your own carbon monoxide and bacteria is not only not good for you and can cause upper respiratory infections but honestly I could care less if you keep wearing them, it will eventually weed out all the dumbasses such as youself but where I have a problem is when you throw a fit that I don't wear on. If your piece of shit mask works as well as you say it does than why throw a fit if I don't wear one.