Property tycoon Donald Trump confesses he has borderline obsessive compulsive disorder, and is terrified of germs. THE APPRENTICE star refuses to touch the ground floor button of a lift and avoids shaking hands with people - especially teachers. He says, "I'm going to do everything in my power not to shake hands with teachers. They have 17,000 germs per square inch on their desk. That's ten times the germ rate of those in other professions. "it's absolutely swarming with germs. In fact, from now on I'm just going to walk up to my office. It's pretty high up there, but I could use the exercise."