[lightman]

(carrying a handkerchief would be a much better — and safer — thing to do.)

I'm waiting for one for the experts to admit that "cough into your elbow or your sleve" was a really dumb idea.

Cough into a tissue and throw it away!

[glennaro]

Well, I suspect that even with a mask on coughing will clear out a long line at a grocery store checkout!