I say ridiculous because I feel that the answer to this question should be obvious in one way or another and yet I have no clue. Have you ever vaped so much you left enough to haze up the room? Obviously most vapor dissipates quickly, but after having picked up an atty that gives off particularly hefty plumes and vaping nonstop, I went to the bathroom, came back to my room and when I opened the door all of a sudden I realized it looked like a group of nice old gents had been kicking back, smoking some fine cigars and sharing stories over a nip of brandy. Maybe I was hallucinating, but I don't think I was. It's especially confusing because I had my window open a crack and the AC on so nothing should be getting stuck in the air. If I wasn't imagining things (maybe my mind was just tricked and impressed by my particularly vaporful atty!), it was not like there was still streams of vapor visibly drifting and floating around.... just a fine, blurry haze. Any insight? Thanks!