Smell after sex

So ever since my husband got snipped I’ve noticed that I smell really bad down there after sex. It’s only after sex and it smells rotten for like two days. I know a lot of you guys are about to suggest BV but i got tested for that twice and I’m clear. as far as I know know STDS either my husband is super loyal and has no time to himself for a side chick even if he weren’t the loyal wonderful husband that he is so what the heck. I’m tired of being stinky after sex and I hate condoms. How do I fix this?

Also remember no sperm anymore so there’s nothing to rot and this was not a problem before.

*i meant to say sperm lol fixed it