Where my one son works they give them these white pull over your head nylon looking pullovers....I am not sure they are nylon but they appear similar but a bit thicker than as if you were to take a pair of nylons, cut the foot off then cut into like maybe eight to ten inch long strips that they pull over their heads to cover their nose and mouth with. Each day they come in they can get a new one. Seems like you'd pretty much be breathing fresh air wearing one of those, I don't think they'd capture much virus if someone had covid and sneezed but there is only half a dozen people staffed there and they don't work near each other. He left one laying around here someplace I'll have to see if I can find it and take a picture.