I have a horrible food allergy.  If i taste any kind of fish, i want to vomit.
oh my, i feel bad for you. that must be horrible. i do not have any food allergies thankfully. Do you only have an allergy to fish?
No, i suppose you might call it more of a hypersensitivity, which could mean an intolerance to fish.
Do you break out in hives or anything? or swelling? Or is it just nausea and stomach aches?
I have a reaction within a few minutes.  My throat closes up and i start gagging.  I'm sorry, this is not a pretty topic.  I'm not trying to make you uncomfortable.