Um. Before someone else makes fun of me: What the heck happened to b)?
Woops.
Woops.
Looks unanimous.
Hopefully, the victim OP will return and see that it's not people vaping that is the problem, it's the couple TOTAL a$$hats she encountered that are the problem.
So:
a) It isn't smoke - but
c) Puffing it in the immediate VICINITY of someone else's child is wrong - let alone blowing AT them intentionally - that's unforgiveable
d) If you are considering "proving that it's safe" by blowing vapor somewhere people don't want to breathe your exhaust - please don't, it reflects poorly on all of us who are more considerate, and may, over time, create more places where vaping is specifically prohibited