As far as I understand msg is naturally occurring in most meats. However, that being said I have a msg allergy as well and have never had troubles there if that helps at all.
Well, given that MSG is safe and naturally occurring (in cheese, for example), I'd say yes, it's "on the menu." With that said your family member should be fine. Double blind tests have repeatedly failed to turn up MSG sensitivity. (https://en.m.wikipedia.org/wiki/Monosodium_glutamate)
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