What should my vagina smell like?

Odor is too subjective to give an answer that everyone would agree on. If you are having no symptoms (itching, irritation, abnormal discharge), then whatever it smells like almost certainly is normal. You're obviously very attentive to your vaginal health, which is good. But don't be obsessive about it. If you remain concerned, see a gynecologist for what probably will be a reassuring evaluation.