They didn’t catch from smoking, but very aromatic liquors can be lit with a high temperature flame. That’s how flambé desserts work, pour brandy and light on fire.

There are known cases of very drunk obese alcoholics spontaneously combusting from a flame or a cigarette. The alcohol ignites and the fat burns like a candle.

@zenvelo you’re in general tsk tsk.

There are several flaming drinks includes Flaming Coffee Sambuca, may have done one (two or three . . . ) of those!

Maybe not outside the realm of physical possibility, but astronomically unlikely. Most like is the cigarette just gets doused by the liquid before anything would have a chance to ignite.