My girlfriend vagina smells like dried fish.why it smells like this?

Vaginal odor: There are many possibilities for a vaginal odor but most likely it is caused by a vaginal infection. A visit to the gynecologist or her family practice doctor can easily solve the issue - there are tests that can be done in the office to determine what type of infection it is and a treatment can be prescribed. Also, a lost or forgotten tampon or condom can cause an unpleasant vaginal odor.