Quote Originally Posted by intrepidus6
Even if the fumes aren't released from burning it(which they are, lol), you still have it on your mouth.
That's a good point.
Combustion makes vapor, impurities from incomplete combustion (leaving black residue, not white) can make that vapor acidic, and that combination can corrode the aluminum so it DOES become mobile.
Plus your saliva is acidic.
If I had to smoke out of metal, it would be either stainless steel, anodized aluminum, titanium, or bronze, which are all pretty resistant to corrosion.