Cleanliness, a type of obsessive-compulsive disorder, that considers things within the scope of normal hygiene to be dirty, feels anxious, and compulsively cleans, checks, and rejects "unclean" things. Which of the following are not cleanliness? ['Hu is afraid of getting germs. He must wash his hands and laundry many times a day.', 'Mr. Smith always stayed in a white room on business trips. Even the carpets must be white.', 'A young lady spent three hours walking to work to avoid contact with others on the bus.', 'Lee does not allow children to eat outside, nor allow children to approach sick children.']