A mask having microorganisms on it doesn't really mean anything. The question is how much, whether they end up going into someone's body and causing an infection. That bit is sort of like the alarmist news stories about how toilet seats, shopping carts and everything else touched by humans have trace amounts of fecal bacteria on them.
A mask having microorganisms on it doesn't really mean anything. The question is how much, whether they end up going into someone's body and causing an infection. That bit is sort of like the alarmist news stories about how toilet seats, shopping carts and everything else touched by humans have trace amounts of fecal bacteria on them.
You don't put a toilet seat up against your face for potentially hours on end.
Days and days and days long (the same masks many/most people used).