Actually we have cotton balls and, quite separately, cotton wool - which is the same stuff but in bulk (looks like candy floss).
Dang, I knew when I posted I’d have missed some nuance. I don’t even know what an American would call the bulk stuff (to distinguish it from cotton balls). I don’t think I’ve seen it sold that way at the drugstore in years.
Sorry for the weird hijack. But unlike the stupidity chronicled in the OP, this issue is resolvable.
Back to the OP, did the poor guy actually have cancer?
I haven’t seen any more info on it anywhere, but that article says
which to me says, essentially, ‘no’.