I think my (you know what I mean) smells, but he doesn't...

For a long time now, I keep thinking that my vag smells. I'm not trying to be gross, but to me it smells like a dead animal. My panties or pants don't smell, but sometimes when a spread my legs to re-position while sitting, and I think I can smell myself. :(I've asked my beloved man if he can smell anything and he always says no. I know he's not lying to me because he would avoid putting his mouth there, wouldn't he? I just don't know what to do to figure this out. I keep myself clean and don't use anything that messes with my natural Ph, like douches or harmful soap, and he says that my vag is very clean. Does anyone else have this problem?