why does my girlfriends vagina smell?

All of a sudden I seem to have this strong smell down there.
I havent had sex since October, I have showers daily, and wash myself.
A couple months ago it smelled and I went to the doctor and she did tests for BV, and
stds and as far as I know, I think she would've been able to tell if I had a yeast infection.
She did a pap test.
I was wondering if it's possible that having my clit pierced has something to do with it.
It's really embarrassing and any advice would help.

Also, sex organs just generally tend to produce unique odours - it isn't necessarily a sign of an infection OR a hygiene problem. Indeed, as your girlfriend may have noticed, my obviously young sir, the penis and testicles also "smell," and sometimes quite strongly. Unless one commits to showering three times a day, scrubbing their nether regions with antibacterial agents and antiseptic (which would likely cause yeast infections or rashes), and avoiding any physical activity that might produce sweat, bodily odours are just a fact of life. Get used to it.

it is also entirely possible that her methods of hygiene are sub-par.