P.S. Cousin's GF from way back used to tell anyone and everyone who ate or prepared food with the family how deathly allergic she was to garlic. DH and I love garlic and put it in a lot of stuff, so she and her FMIL were constantly policing us to make sure we hadn't put garlic in anything. It was annoying, we only have to be told something once.
It turns out, GF just didn't like garlic. Which was fine, but if that's the case, how about just asking if something has garlic in it and if it does, you don't eat it- instead of calling everyone in the family the day before Thanksgiving to make sure we're not putting garlic in the food?
When I asked FMIL about her part in this scheme, FMIL admitted that she knew that GF wasn't allergic, just disliked garlic, but she was afraid that if GF tasted garlic in anything she would make a huge scene and make the meal really awkward.