I've seen someone try to drink them, but whenever I've sniffed too much all I got was a blinding headache.
I've also had a (non-smoking) friend ask for a cigarette, dip it in the bottle and stick it up his nose.
Takes all sorts, I suppose.
(, Tue 17 Nov 2020, 4:14, Reply)
en.m.wikipedia.org/wiki/Methemoglobinemia
I'd watched 'Yellow Submarine' with the bottle under my nose, I was 17.
(, Tue 17 Nov 2020, 16:18, Reply)