If the leukorrhea has a sour smell it indicates gynecological inflammation, the most common condition is infection with bacterial vaginitis. This can also be caused if the underwear is not changed for a long time. It is especially seen in women who have frequent sex, because the vagina is the passage for sex and childbirth. Frequent sexual stimulation can lead to changes in the vaginal environment. If you don’t take care of your hygiene during sex, you can introduce bacteria into the vagina and cause an infection. Bacterial infection can lead to bacterial growth in the vagina, which can cause changes in the leukorrhea and bacterial metabolites that can cause odor in the vagina. It is important to go to the hospital for a gynecological examination and routine leukorrhea, and then use the results of the routine leukorrhea to guide the medication. Do not have sexual intercourse during the treatment process and pay attention to hygiene.