I've heard it doesn't and the only good it does is if the sick person wears it. There's spaces on the sides and the germs can get in so it doesn't protect like an N95. Well I work at a hospital and we're supposed to wear these all day and only change them if they get soiled. I'm a housekeeper so I deal very little with patients, if I go into a room that someone with coronavirus just left, does the mask offer any protection? What am I missing?