A healthy vagina always emerges a discrete odor at one time or another. It is normal that it has a certain odor sometimes. Whether this natural smell is neutral or not, it is a matter of personal judgment. Each girl has a particular vaginal smell; it is natural. Even when you notice a recent difference in its smell, it is not necessarily an infection. That change may be linked to a specific moment of your menstrual cycle because the smell of your vagina can vary depending on the time of the cycle.
Besides excessive washing, douching, tight clothes and certain chemicals (scented body washes, antibacterial soap, etc) can cause vaginal infection or yeast infections. Certain contraceptives and foreign body in vagina can provoke vaginal odor and other major health issues. Vaginal and anal intercourse alternation during the same session can cause vaginal infection resulting in vaginal odor. Though rare, diet can affect the smell of your vagina. In some cases of vaginal odor, eating a healthy diet (eating fruit and vegetables abundantly) can remediate the condition without any medical treatment
Treatment:
Wear clean tampons and change them regularlys Avoid Douching, it is not necessary; it can damage or destroy the normal acidity of the vagina resulting in vaginal problems. If you suffer from ant type of vaginal infection, it is recommended to avoid wearing tight underwear and pants so that the vagina can breathe easier. Tight clothes can irritate the vagina and cause or increase vaginal odor. Wearing cotton panties is also important. If a vaginal infection persists despite treatment, you need to see a doctor because it could be a sign of Cancer of the cervix or vagina, Bacterial Vaginosis, Chlamydia, Genital Herpes, Gonorrhea, Pelvic Inflammatory Disease, Sexually Transmitted Diseases (STDs), Vaginitis, Yeast Infection, etc.
For women, after intercourse, it is important to go urinate. Urination after sex helps to remove any possible bacteria that may be outside or inside the vaginal canal that would go up in the urethra. Because once present, these microbes tend to go up into the bladder, and can cause recurrent urinary infections. Urination causes a cleansing effect, forcing the microbes outside.