Re: My Idea
Ah, triple post, but I remember my third point.
If you do want to supercool your smoke, probably best point to do so is in the stem, because there you are not limited by the water being unable to safely go below 0 degrees and also by waters heat capacity. Water can absorb a LOT of energy, this is why bodies of water change temperature slowly and is also the cause of many of water's useful properties.
One last thing, don't freeze your throat.