Can i take boric acid for vagina smell. i dont have bv or yeast. its a bad smell like copper. what should i do im in school and my peers can smell it?

By far the most common cause of strong vaginal odor is bacterial vaginosis. (Yeast rarely causes significant odor.) Despite your negative testing for BV, it remains a possibility. Trichomonas also is possible; or sometimes a foreign body, like a forgotten tampon. Discuss with your doctor or see a gyn to specializes in infectious diseases. Good luck.