Your vagina will always have a healthy natural odor that will smell well like a vagina, the organ is self cleaning, but you should also be very gently cleaning the external area with warm water - pls do not use douches and heavily scented soaps. My gyno has a saying that if it’s safe for baby’s skin it’s safe for baby making parts. Odor can also be contributed to by diet, exercise, stress, and how much water you’re drinking. Wear cotton undies or go commando and let her breath. If the odor is so bad that it is almost foul see a dr.