Strange smell when using condoms

Me and my boyfriend usually don’t use condoms as I’m on birth control, but we have a stash for the week once every three months I’m on my period and taking the sugar pills. However I’ve noticed a strange smell on me after sex when using condoms. It’s a little chemical, a little chlorine, and a little fishy tbh.

I have no other reactions to the condoms so it can’t be a latex allergy and the smell goes away within 24 hours, but this never happens when we don’t use condoms. Is this a normal thing or something to be concerned about?

Edit: It’s not just the latex chemical smell, I’ve smelled a condom before and while that is part of the smell the larger smell/concern is fishy