Treat the cause. You first need to find the cause and then treat that. The causes of vaginal odor are many but include bacterial vaginosis, which is easily treated. See your doc for diagnosis and treatment.
Find the cause. F you have a change in color, texture, odor or amount of vaginal discharge ; problems such as pain, itching burning with urination or sex or redness/swelling then it is best to see your gynecologist for evaluation ; accurate assessment.