as the meme states actually, the point of masks isn't really to protect yourself, that's a marginal side benefit, the point is to protect everyone else from your pestilence ridden breath of death.

watching videos that show how particulate from your breath spreads with and without just literally anything in front of your mouth is disgusting, unblocked your breath carries spittle several METERS in front of you, like the world's most disgusting sprinkler put sideways.