How Can Vaginal Odor Be Treated?

my vagina always has a bad odor. i will shower and literally 10 mins or less later it smells again. I spoke to my gyno about this problem and she ran tests for bv and pther bacterial infections and she said the results were all normal and the bacteria looked "normal." I use unscented soap to wash, and wear cotton undies. Is this just my natural scent? If so, can i change it?