Facial odor...

I have somewhat oily skin and I've noticed that even if my face is clean, if I rub the skin around my nose and under my chin, it smells unpleasant. Almost like cheese or sour milk. No matter how much I wash my face, I alway get this odor. If I eat certain nuts, peanut butter, and certain beans, the odor changes but for the worse. My forehead doesn't smell like this at all. Just my cheeks, around my nose, and under my chin. Does anybody else experienced this phenomenon?