It’s safe, in terms it won’t choke you, unlike karens think (check out the stupid_karens stream for more)
Meanwhile, if you have asthma then think about getting exempt if you go to some sort of school, and if your kids have it, consider it, but the CDC said they’re only 50% efficient even if you have a multi-mask, filter mask, KN-95, etc., they’re all only 50% effective.