There are people in this world who are afraid of certain things: like germs. Now not everybody likes germs, especially the kind that make you sick, but how does someone become afraid of germs? I was hoping we could talk about this because I don't know very much about it. How do they act about this fear? I know they are known for inscent hand washing and cleanlyness and carrying around their own silverwear and other such behaviors. Is this caused by some kind of chemical imbalance in the brain?