[XR6TCraig]

I've seen it a lot. That and my sungalsses always fogging up when I hop out of the air con and into the humid air. Constantly happening today actually.
I once saw it on a plane at brissy airport on a fairly humid morning. It was while loading was taking place so the doors were opened and as the air from outside mixed with the aircon air it looked like white smoke coming out of the vents all along the inside of the cabin wall.
Didn't that freak a few southerners out!