After viewing the above I am reminded of the Seinfeld episode where the cook does not wash his hands after using the bathroom. In other words, you can't see bacteria/microorganisms by looking around. :S-

JohnD: Well, that's true. But I trust in the judgment of my fellow man. And I, like the luscious English foodie Nigella Lawson, subscribe to the Nietzschian notion of "that which doesn't kill me makes me stronger". If it's good enough for that hottie, it's good enough for me!