Personally I'd be scared shitless if I were to vape stuff like what you're describing. I'm genuinly curious, what are they vaping and why they think it is a good idea?
I'm one of the "thick clouds" crowd - because my first attempt to switch from "traditional" cigarettes failed because the feel of smoking was missing. I'm now on nicotine-free oils, and plan on stopping outright over the next few months, as the physiological need is now beaten - just the psychological "what to do with my hands" end of things to treat.
As to why I think it's a good idea - don't know if I do, but I think it's a better idea than smoking. I'm no longer constantly phlegmatic, I don't wake up in the morning out of breath, I can taste things again, I've stopped wheezing. Those all seem like good things to me.
Finally, I've never seen someone going "cough cough urgh" at a fog machine at an event or disco - and it's the same damned stuff.
That's precisely why I don't go to discos or theaters that say they are using fog machines.
Whut. I'm a smoker, and standing next to such a machine, definitely makes me go "cough cough urgh", if I happen to breathe a lungful when it goes off in my face. Even while smoking :) (back in the times when you could smoke inside clubs) (not that I want those times back, mind you, it was a good change and it's making it easier for me to try and quit)
Yes, I don't like winter either.
> And when I smelled it I thought "Someone's really hitting that BBQ!"
This implies that there is some serious crap in the vapor, so that you can smell it from the distance (and it smells like BBQ).