I wore my mask for the first time in ages today. I hate that thing. I think their efficacy is limited by their fit. If air can get in round the side, it's not being filtered. Mine also shuts off my nose, which probably reduces some natural filtering since I have to breathe through my mouth.
I wore my mask for the first time in ages today. I hate that thing. I think their efficacy is limited by their fit. If air can get in round the side, it's not being filtered. Mine also shuts off my nose, which probably reduces some natural filtering since I have to breathe through my mouth.