This is very interesting, albeit a few years old.
Ever taste metallic water? Ever open a can of beer and go, "hmm, it's a bit, well, tinny"? And ever grasped an iron bar, only to smell the iron on your hand a few moments later?
No you haven't.
It turns out that metals have no taste or smell, which is rather contrary to what we believe. It turns out that what we percieve as a metallic flavour is actually a chemical reaction of impurities within the metal with compounds in the skin and tongue. One of the more common compounds is 1-octen-3-one, a rather smelly substance. How's about that?
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