139 Man and his eleven year old son checking carbon dioxide levels with a mask on 😳😳..SHOCKING health hazard !! Share with every parent PLEASE !!! (files.catbox.moe) posted 4 years ago by Oldpatriot 4 years ago by Oldpatriot +139 / -0 Your browser does not support videos. 13 comments share 13 comments share save hide report block hide replies
They define a mask as that which covers the face and nose. No one said that it can't be porous. 3 layer medical mask? Remove 2 layers. I can blow papers off a desk with mine.