HT - You have NO clue - the vagina IS self-cleaning.....
The vagina and the eye are self-cleaning organs.
Here:
http://www.teenwire.com/infocus/2000/if-20000421p067.php
GA - the vagina regularly has discharge - usually clear but can look like egg whites when ovulating. Shouldn't have a stinky smell and the vagina does have it's own PH level. Douching can disrupt the vagina's PH level which CAN lead to infections & the inability of the vagina to clean itself. A slight odor or smell is one thing and varies by woman but again, should not "stink." And the odor can become stronger when ovulating or during her period.
It's been found that it can help women to eat 1 yogurt daily to assist with "friendly bacteria" in her pookie. A bad smell comes about with infection or a disruption of the vagina's PH level - there is a certain amount of good bacteria necessary for vaginal health.
GA - I would suggest she see her GYN for a full checkup to rule out infection, STOP douching immediately if she is, add yogurt + cranberry juice to her daily food plan and YOU may need to get looked at too as men can carry infections in their penis without knowing it.....