Odd, about a fortnight ago, it seemed that, in an enormous room, for some time, the only sick and coughing people were the ones sitting near me. Since that point, it seems that every day, I'm sitting next to someone (different every day) who is pounding their keystrokes loudly, and similarly, it doesn't seem in evidence in the rest of the room.
It's good to vary one's annoyances. Keeps off the monomania and fixed notions.