Some people have that reaction to alcohol! I am not sure what the genetic or epigenetic cause is, but it is a known thing.

Metal cans are so convenient, but they do add weird undertastes to their contents, and particularly so if you drink directly from the can instead of pouring the contents into a less chemically reactive container.

This is what comes of having a historical linguist as the source of one's canon. They are far too prone to toss in weird typographical characters because they want to be precise about pronunciation. *wry*