I  find that when I wear a mask, I breathe very shallow to keep my glasses from fogging up and then I get very dizzy and feel faint. I also have read many reports on how homemade masks do not filter viruses. Also many people wear them improperly, they are either too big or too small. They also adjust their mask frequently , which is a no no! I also doubt that people wash them frequently or wear a clean one daily. I also doubt that they wash their hands before applying or when taking them off