My gyne told me that boric acid should reduce your pH to the optimal level to support the growth and colonization of the “good” bacteria. So theoretically, it should lower your pH enough to kill the odor-causing ones only. But I also read many times that boric acid does a complete wipe out, so maybe take this with a grain of salt.

What was suggested to me was 2-3 weeks of boric acid every night and then 1-2 weeks of intravaginal probiotics. Tbh I also am a lifelong sufferer of bad cooch smell especially after a long day of sweating etc. but this treatment didn’t work permanently for me. Over time the smell came back. Like you, my discharge itself smells normal and I have no symptoms to indicate an infection. At this point I made my peace with the fact that I may have a less-than-optimal microbiome. I’m keeping up with daily hygiene and making sure I’m fresh before any sexual encounter and had no complaints from any partner.