I found a post by North Texas Vapors saying they were having a huge vape meet in Lewisville, TX in March. I just looked up Vaping Conventions 2014 on google and it kinda led me to it. That is the only one I saw at the moment. It's 4 hrs. from me so I am thinking of attending if it is still going to happen. They mentioned it was being hosted at a medical building of sorts that has a "hall" so there might be some random studies being done to test the air quality but no mention of that, it is just a hunch and a suspected notion from my own anti-trusting nature.