Bacterial vaginosis often does not have an abnormal smell when it is likely improving. Bacterial vaginosis occurs due to a change in the pH level of the vagina, which disrupts the microecological balance, leading to mixed infections. These infections can result in an increase in vaginal discharge and itching in the vulva, although these symptoms are often not very obvious. However, a fishy odor of the discharge is a typical characteristic of this condition. After treatment for bacterial vaginosis, the disappearance of the unpleasant fishy smell indicates a significant improvement in symptoms. The primary treatment for bacterial vaginosis involves local medication in the vagina or oral medication, mainly using metronidazole. It is crucial to treat bacterial vaginosis promptly to prevent complications such as endometritis and pelvic inflammatory disease, which can affect women's reproductive and overall health.