How to get rid of fishy smell??

I don’t have BV or yeast so why does my vagina smell fishy sometimes?? And how do I get rid of that smell? I gave birth 3 years ago and since then my hormones haven’t been normal so idk if that has anything to do but my husband says it smells like fresh oyster eww but not like fish wtf does that even mean 🤦‍♀️ to me it smells like fish. Is this even normal??