I have noticed for quite some time now that if i work out or wear tight bottoms, I get a vaginal odor. Not bad but it smells like plain mashed potatoes. I been tested for all stds and i tested positive for herpes. but this smell was there before being tested. is this normal or not. and i only have the potato smell if i sweat down there, if i don't there is very little to no smell. also if i shave bare down there then there is no smell. help please.