Question to ponder...

Why does the poop smell not come off your hands? Seriously. We have all gotten poop on our hands at one point or another. Us mothers have way more of a reason than those of you who aren't but still...why does it not wash off? You can wash with soap and hot water twenty two dozen times and it still doesn't wash off! WHY? (regardless of the answer, I have my own way of getting it off.) But still, WHY? Why does the poop smell not go away? Feel free to give me your medical answer Kelly.