I can't STAND smoke from cigarettes, cigars, etc. But the vapor from these e-cigarettes? Doesn't bother me at all. It doesn't smell bad, and I'm given to unders

I can't STAND smoke from cigarettes, cigars, etc. But the vapor from these e-cigarettes? Doesn't bother me at all. It doesn't smell bad, and I'm given to understand it's mostly harmless.