Most of Gen Zs slang makes sense and you can easily figure it out from context. It even sounds better than older slang in conversation. Skibidi is an exception. W.T.F is that supposed to mean? Is it a verb? An adjective? Both? It sounds dumb and seems to mean nothing…
Not the person you were talking too, but I think where you’re losing people is that no one else is looking at his face and thinking “measles”…there is a picture in the article and that’s not what measles looks like…at all. In any way. Your continued insistence that it “might be contagious” when no reasonable person would come to that conclusion really makes it look like your trying to use an excuse to be uncomfortable with the guy for daring to be in public.
Also stop trying to equate this with coughing. No one whose made it to adulthood thinks this guy has any sort of contagious pox, that not what they look like and it doesn’t take a doctor to know that.