To look after our health and hygiene is something we're told from an early age. We should wash our hands, our faces, and shampoo our hair, otherwise we could get dirty and sick. But, some people claim that our insistence on Cleanliness is unnecessary, and that it's only by exposing ourselves to germs that we can grow immune to them. So, what would happen if you never washed at all? Ever? In your life? In this video, we take a look... If you're watching in smell-o-vision, beware.