My girlfriend, 25 years old has a very strong vaginal odor, she has gotten tested for STDS and infections and everything came out negative. She does have an IUD and has had it for 3 years. The odor is strongest while intercourse. She does not itch or burn. There are no other side effects associated with the smell. The smell is not fishy necessarily but not "normal" by all means, has a bit of an iron/metal smell to it, like blood, she however has poor iron levels and has been diagnosed with Lupus. The smell goes away completely right before her period and throughout. Abstinence does not correct the smell issue either. The smell is too strong to ignore. Here are some facts:
Female, 25, no STDS, no douching, takes pro-biotics and eats the special good bacteria yogurt. Smokes cigarettes, doesn't drink alcohol, IUD for 3 years, she has been diagnosed with Lupus, has taken antibiotics to treat the smell even though her doctor did not find any signs of chemical imbalance or infection.