I used to go to a chinese place that was run by a korean family. Because I was a frequent patron, and liked to try different foods, they would often bring me a sample of their personal dinner that night.
I don’t remember any twitching, but some of it was, uh, different. A lot of fish and quite a lot of garlic. Which was fine by me. Not that much chili, IIRC. Except in some of the kimchee, which they seemed to prepare in several different ways.
Lotsa soup.