That's very interesting because cheese, paneer and cured meats do trigger wife's migraines. I had not considered that richness is n glutamic acid is a common factor.

The personal, anecdotal relation seems strong on the cheese and paneer component. Even if she had something not aware that it contains either of those it would trigger a migraine, sometimes not immediately though, seems to take a few to several hours.

Will have to try a blind testing with MSG.