Re: Thickest Smoke
But it won't be cold enough to be noticeably thicker. It will feel cold, of course, but never blow your brains out density difference. Also, that is after it has been pulled all the way down your into your lungs and released, also spreading it's over-all surface area allowing it to be cooled very quickly in the air; it's definitely going to be colder than when you inhaled it.
I think what would really create extremely thick smoke would be a very high humidity.