I have no idea if this is serious or not, but CoolBuzz calls it a Smoker Bell. Here's a great quote:
So now, when you worry about roaming outside the restaurant or theater, you can relax under a ‘Smoker Bell’ and draw that fag with peace, while sipping into your drink — as it will take all care of the hazardous smoke you exhale while smoking.
If it's real, I hope it will suck in all that yucky secondhand smoke. Yucky!