I thought this was going to be a completely different post than what it is.
Yesterday a co-worker told me that her son's lung had collapsed which was caused by vaping.
It is not healthy.
I don't know about the residual smoke and getting it out of linens, curtains, carpet, room, etc. I do not it is very hard to get cigarette smoke out of hotel rooms. I worked at a hotel where people smoked in the non-smoking rooms.