The only thing that stands out to me is the names of some of the juices. When someone who is curious sees me vaping asks me what it is and i tell them galactic sparkle or something like that, the instant association is with bath salts or k2 from when it came through our town some time back. A friends wife still has to deal with idiots who did bath salts and fried their brains permanently.
I do encourage anyone showing curiosity when they see me vaping, i answer any question, for as long as it takes. I can see them forming their opinion of vaping right in front of me. I let them smell it and most importantly, i let them hold the rig in their hand, explaining what it is, does, and what the liquid is inside there. By the time they are done, i can see someone who isn't scared of what they don't understand, and thats one more person on our side.
Sorry for the rant