BV is almost always accompanied by that fish odor and usually a discharge.blueta2 said:The only way diet would effect it is if she has a yeast infection.
Sounds like BV (Bacterial Vaginosis) Many women get this. Dr's do not know this cause but they think it has something to do with the PH being off in the vagina.
Google BV and you will find your answer.
Has she been checked for a yeast infection?
Diet can affect body chemistry, where in the monthly cycle a woman is, what medications, vitamins, foods, alcohol, and cigarettes, can ALL affect the body, hence the way things smell/taste.