Fancy nuts

With the holidays coming up, I thought I'd ask if anyone else experiences what I do: nausea induced by fancy nuts. While you are eating fancy nuts, do you get nauseous? I just had some and, sure enough, after a couple of munches that old feeling popped up. I can't figure out which nut in particular causes it. Since the feeling is so unpleasant, I don't really feel like trying one by one. I'll just skip the whole shebang.