Odor during intercourse may be caused by some kind of vaginal inflammation or vulvovaginal inflammation, mycoplasma infection, cervical erosion, chronic cervicitis, etc. If it is convenient, it is better to come to the hospital for routine leucorrhea, mycoplasma culture and cervical cancer scraping screening to make a clear diagnosis and then treat under the guidance of the doctor. If it is not convenient to come to the hospital, you can also use the medication empirically. If you do not have the requirement to have children in the near future, you can use the cleanser to cleanse and use the clindamycin vaginal gel to plug the vagina for a week. You should not have intercourse during the medication period and wear cotton underwear, not tight pants. If you don’t pay attention to hygiene during sex, it may also lead to odor during intercourse, so you must pay attention to hygiene during sex.