My girlfriend, a reasonably adventurous eater, absolutely cannot stand
any sort of lamb or goat product. Any sort of lamb dish I get as well
as goat's milk cheese tastes either metallic or rotten to her. I've
mostly given up trying to find something she likes, but I am curious
if anyone knows if there's a reason for this. I'd assume it'd be
genetic (her sister also dislikes lamb and goat products), but I can't
find any reference to it.

Any thoughts?

Thanks!