And a paper mask doesn't seal at all, so it does virtually nothing. The purpose of those is to keep stuff from getting in your mouth, and block your own sneezes, while you do delicate work. For example in surgery, you don't want blood getting in your mouth. They don't do anything to airborne particulates.
And a paper mask doesn't seal at all, so it does virtually nothing. The purpose of those is to keep stuff from getting in your mouth, and block your own sneezes, while you do delicate work. For example in surgery, you don't want blood getting in your mouth. They don't do anything to airborne particulates.