> You have zero rights to harm my health.
> So, it's not that bad is simply not a defense. If you want nicotine ware a patch, chew gum etc. If you want some other crap in your lungs, do it somewhere that does not impact me.
Dude, the health-impact of getting worked up about this is already magnitudes more than the health-impact of the thing you are worried about.
It's one thing that there are studies showing nicotine is a harmful substance (which isn't even quite as straightforward as it seems), it's an entirely other thing to quantify the risk of exposure to an occasional whiff of e-cig exhaust, in the context of traffic pollution, fireplaces, incense, air fresheners, people farting, or investigating where a burning smell comes from.
The latter 9 times out of 10 involves burning plastic, which going near to instead of away from, for a minute, just to check, is way super more stupid harmful to your health than actually taking a full drag of an e-cig. I owe my life to people that weren't afraid to do that (still insignificant) damage to their health, which is a million times worse than the perceived harm you are whining about.
Hell your presence on my planet is already more damaging to my health than you catching a whiff of e-cig. So nothing personal but kindly maybe get off it. That, or learn how to rationally deal with very very tiny probabilities (it's not intuitive, but also not that hard).