Folks, if you see someone collapse on the street and they're wearing a mask. TAKE THE MASK OFF OF THEM. They're not getting enough oxygen. It is taxing to breath through an N95 mask. Source: I passed out when I put on a surgical mask while my wife was getting an epidural. Not from seeing the needle because I didn't even see the needle, and I don't get squeamish anyway. I have low blood oxygen and it was too hard to breath through the mask.