Seafood=Fishy Odor???

So I had an assortment of seafood with the family yesterday night and when I went to bed everything was normal. I woke up this morning, showered did my normal 🐱 routine and proceeded through my day. I even wore a new pair of undies. But at various times throughout the day I would get a whiff of a fish (just like crabs) smell from in between my legs. And it'd only happen when I moved them open to far or something like that. But it was aggravating because this has never happened before when I've wanted seafood previously. Idk I was wondering if somehow my seafood dinner could be related to the seafood smell in my pants 😂😂 I showered again about an hour ago and so far it's gone but I just wanted to know if anyone has experienced this or can shed some light on this mystery lol