Them: “Why are you wearing a mask? Are you sick?!”
Covid can spread without symptoms. I may or may not have Covid at any time. *You* may or may not have Covid at any given time. We could both be infected or not infected right now. Who would know?
That, dear heart, should scare you more than the sight of a mask. Or a respirator, which is what I’m wearing. Because I could possibly be infected and do not want to be responsible for getting someone else sick.