I've only been vaping a little over a month but surprisingly I have had no problem vaping indoors anywhere. And I do it about everywhere I go. vaping at school which is a strictly non-smoking campus has not been a problem. I would normally vape in the cafe and nobody has given me looks or even acknowledged it(I tried to be a bit subtle with it though). I haven't tried vaping in class just because I think it would be rude. I was vaping at a bar with 50+ people in it just sitting on the couch vaping with 0 problems. Same goes with restaurants, convenience stores, you name it. I don't know if everyone knows what it is or some people are just confused by it. I'd be happy to explain it or stop using it if asked but I haven't encountered this yet. I just find it kind of odd with how new these things are.