I am allergic to seafood and can't eat food like shrimp. 
That's scary. I know some of it is mislabeled which must make you cautions when eating out. 
Yes its a bad deal because I used to not be allergic and I actually really liked it. Now if I have it, I really hurt. 
I love seafood. I hope I never experience that. Shellfish are classified with so many species. Have you accidentally ate seafood when you didn't know?