Has anyone experienced this? The day after having condomless sexual intercourse, I always have a foul smell coming from my privates, both my patner & I have been screened for STIs and they came back clear. What could be the cause? I should mention that after showering the smell disappears but my self confidence is dwindling

Did you get tested for a yeast infection and BV?

If your partner is finishing inside of you that could be a likely cause. Semen can throw off the PH balance and cause possible infection.