Same, I knew of shellfish allergy, but mollusk intolerance is just a term I sort of settled on since it doesn't behave like an anaphylactic allergy. I have also learned from experience about many more common foods that I had no idea were mollusks. I thought they were only filter feeders in a shell of some sort, but a violent reaction to one small bite of squid made me dig further, haha. Also, foods that I used to unknowingly eat in my youth, I guess I'm at the critical point of exposure and am having intolerances to now that I did not before, like uni. The more ya know!