Quote from Adrian Monk in Mr. Monk and the Leper
Dr. Polanski: I don't think you have to worry. As I said, it's not very contagious. I've been practicing for 15 years. I've only seen one case first-hand. Adrian Monk: I can't do it. I just... I- I can't do it. Dr. Polanski: Well, how about this? If you do contract the disease I'll treat you for free. Adrian Monk: The hell are you talking about? How about this? We never call the guy back. We don't see him again. I avoid him like the plague. Yeah, you know what? Exactly like the plague.