The only thing the serious studies have concluded with any certainty is that vaping is less harmful than smoking for the addicted person. That's all.
IMO, Addicts do not have the right to vape anywhere except where it is legally prohibited ?
This is the place with more info I know of even though there are other people studying ecigs but not as regularly:
Home
I've mentioned it before but when I asked Dr. Farsalinos about second hand vaping he told me - and I know it's a bit coloquial - I'd only have to worry about that if I were in a room with 100 people vaping at the same time. That seems clear to me.
I know you know...
PS - I don't like being called an addict. That's the way some ......s see us (I don't mean you, mind). The problem is everybody has skeletons inside the closet, and, very often, much, much bigger than vaping or even smoking. Unless you're speaking in medical terms and, in that case, if I vape 0 mg am I still an addict?, if I usually vape 0 mg am I an addict?, if I replace nicotine's TH for, say, BiteXtra Enhancer am I still an addict?, if I actually like a certain amount of nic for the flavour am I an addict? Etc. It's all historical, social and, most of all, ideological. And, frankly, ideology isn't really a science.