Vag smell

What exactly is a vagina supposed to smell like? I've been on the internet multiple times looking to see if I have an infection. It doesn't smell fishy and I don't have a yeast infection. I've been to the health department and she didn't say anything about me having a bad smell or infection when she looked at it. But when my ex used to try to eat me out he would gag and spit into the trash can. Like, wtf? It doesn't smell insanely bad but I feel like it has a strong smell. Kind of like salt, and metal. What should I do? How are they supposed to smell? How does yours smell?
Edit: I clean it thoroughly. Every time I shower. It's not hygiene.