IMO, it is fair to move the goal posts of this discussion back to why not vape in a hospital or on a college campus.
Now, if I leave the post with only that sentence, I could see how it would make for perception of zealotry. But I feel very prepared and rationale to hold that discussion without resorting to ad hom. If the discussion proceeds in direction of "we don't know long term effects" AND therefore must err on side of caution to not do it, then I truly honestly do not see it as ad hom to identify that logic as ANTZ. IMO, erring on the side of caution is rational vapers coming up with a way in which it is respectful to vape in that situation. Especially considering that current, short term scientific studies are undeniably in our favor. Thus, we kinda sorta do know or have at least some idea what vapor contains and how it would affect people if they inhale secondhand vapor.
Yet, as this thread's OP demonstrates, we have the people amongst us who have mind made up that exhaled vapor is on par with a pollutant. IMO, you have to deny all personal and anecdotal evidence/experience to reach into the territory of seeing exhaled vapor as a pollutant. Plus ignore scientific evidence. When I take all of that into consideration, it is actually mind blowing, or at very least, humorous that we live in a time where vapor is deemed that troublesome.
Here in the midwest, around this time of year, just about everyone you run into has vapor coming out of their mouth, and I think it took me until around age 3 to realize how fascinating it is that you can see other people's breath, while also realizing just how remotely harmless that is. It does have potential of leading to some sort of health issue, but is truly remote. The flip side of this is that as long as you live with other humans (i.e. in civilized society) chances are high you'll all be exchanging germs (or is it cooties?) pretty much all of the time. And at that level of consideration, we're all blowing stuff in each others faces all the time, though presumably with no interest in causing trouble for anyone around us. All I know is when I reread this paragraph to make sure it reads just how I want it, I'll be laughing at the idea that I felt compelled to spell this out, as if it needed to be spelled out.
It's the people that have their mind made up that secondhand vapor is 'something wrong is definitely occurring' that manifest the ANTZ position. And I don't think those people are necessarily a "them" group of people. I see it in us (vapers), and as one who's been of that mindset, I see it in me. I can actually empathize with ANTZ and appreciate that position, within reason. However, to completely disregard and downplay the counter position to 'secondhand vapor is a pollutant' is where I feel a reasonable line is being crossed. And as that just demonstrates overplaying your hand, I'm still going to feel prepared, rational and respectful in continuing the discussion, should mutual respect be what is truly being sought.
However, due to his severely stunted emotional growth, he was reduced to acting out in ways more commonly seen in adolescents, i.e., I like her so I'm gonna pick on her! Of course, once he realized he had actually spoken to a real live female, he hastily made his retreat! 
thanks for this! Love the comments by Joe and others like Joe, too. 
