In the grand tradition of sysadmins having to diagnose everything from a misconfigured router to a plugged toilet, I think diagnosing medical problems might as

In the grand tradition of sysadmins having to diagnose everything from a misconfigured router to a plugged toilet, I think diagnosing medical problems might as well be in the skill set. First, I'd check the cooking oil and seasonings for common allergens. Then, if they had visited the US recently, check for Alpha-gal Syndrome.