Make sure when wiping after a BM, that you wipe front to back, even using a wet wipe to ensure cleanliness. Never wipe back to front, that introduces intestinal bacteria into the vaginal and urethral areas. There is a normal odor from the area, but should smell musky, not like a BM.
It could be a certain kind of bacteria that occurs, when the p.h balance of the age is out of sink.. Go 2 the doc they will do a swab.. Can be caused by stress, certain sexual activities.. And things like that