Earlier quoted context omitted.
Masks are considered useless unless you are infected. This is a bizarre claim that can be countered against the reality that every front-line worker is equipped with a mask. EDIT: Almost immediately I dropped to -2. Bizarre. Again, every health agency the world over equips health workers who deal with potential COVID-19 with N95+ masks. For some reason people desperately want to clutch onto the notion that it's usele…
Those paper masks do little if anything to help the wearer from taking in anything. They do not filter the air—they are far too porous and loose-fitting to filter. They do help prevent the wearer from spreading their germs and touching nose/mouth as you said, but they are not an effective air filtration device.
N95 masks just look like cheap little paper things that you stick on your face.