well someone can have covid and might not have symptoms, or they might even don't know, that they're are infected, because it takes like 2 days before the symptoms show up
so yes, masks do something... ofc, that it's not like 100% protection, but they're helpfull and you need to change them every like 2 hours not every 5-10 minutes as you said earlier...
My guess is, that you voted for Duda
2020-07-13 13:43