I think sesame makes me violently throw up for about 8 hours. The last three times I’ve knowingly eaten it this has happened. But it doesn’t show up on an allergy test and all three were 6 months apart so could have just been a flare up of something else. But it was the exact same symptoms each time. So now I just avoid sesame, it’s really tricky to do as it gets in to all sorts of things, but for seemingly no reason. Even ordering a burger is tricky, why are there sesame seeds on a burger bun?