“By the way, all those I know that smoke do so on Yomtov as well. And there is a serious question of whether it can be done on Yomtov even if it were to be somehow mutar at other times.”
I have often wondered how smoking could possibly be muttar on yom tov (if at all). Even when lit from another source of flame, the act of smoking causes the cigarette paper and tobacco to burn down, and the cigarette butt eventually needs to be extinguished or it can be a fire hazard. This has never made sense to me.