Although many believe yeast can be found on molding bread, I associate yeast with my grandfather’s feet. Yes, this is gross I know, but if you saw them, you would think this too. However, the better question is why are you curious about yeast? Who honestly is curious about yeast on an ordinary day? Is there something growing on some part of your body that you can’t figure out if its yeast or not? If you are seeing something unsual and yellow growing, you might want to go see a doctor.