Sexual intercourse is not recommended for girls who have white stuff down there that smells bad. The white stuff that smells bad down there in girls is mostly considered vaginitis, which can be contracted through direct sexual intercourse. There are many types of vaginitis, which require targeted treatment for different types. 1. Bacterial vaginitis: can be manifested as vulvar itching, thin leukorrhea, accompanied by a fishy odor, symptoms can be aggravated after sex. It can be treated with oral or local antibacterial drugs such as metronidazole. 2. Vulvovaginal pseudomycosis: manifested by vulvar itching and tofu-like leukorrhea. It can be treated with oral or local antifungal drugs such as miconazole. 3. Trichomonas vaginitis: the leukorrhea of patients with trichomonas vaginitis is thin and purulent, and the amount of leukorrhea is very large, the color is yellowish-green or greyish-yellow, and it will appear foamy and have a bad smell. It can be treated with oral metronidazole tablets, and it should be noted that sexual partners should also be treated. In summary, if the above symptoms need to consult a doctor in time, such as a clear diagnosis of vaginitis, in the absence of recovery before not recommended and sexual life, and the above drugs need to be applied under the guidance of a doctor to treat, do not use drugs.