Ok about 2 years ago me and a buddy decided to check out the BGC, I have been there thousands of times already but he was a skeptic so we went, now we had a 35 mm camera with us, it was during this time when we went, and out of all the pics we took it was only these (last three) pics we took that this mist slowly came into the shot getting thicker by the last one. I don't smoke and like I said it was about this time out so it wasn't our breathes.