^^^ I have been tempted a time or two in the past, when strangers complained about my sniffling, to ask if they were prepared to pay for surgery to repair my deviated septum, plus my lost wages while I was recovering. I have thus far refrained, because it wouldn't be a reasonable request and I doubt the sort of person who demands a stranger stop breathing loudly would get the point. The point is that they are suggesting, if not demanding, that I spend a lot of money, and experience significant physical discomfort, to prevent their being annoyed for 20 minutes on a subway train if I am getting over a cold. (Antihistamines help with allergies, and thus with congestion from allergies, but are useless when it's not a histamine reaction.)
(The issue isn't just the money: it's that they're ordering someone they don't even know to have surgery, which my doctor has never suggested.)