The presence of obsessions or compulsions, or both, are what distinguishes obsessive-compulsive disorder from other conditions. The obsessions or compulsions cause marked distress, are time-consuming, and interfere with a person's normal functioning.
(1989) concluded that everyone excretes stinky compounds in their urine after eating asparagus, and the only variation is in ability to smell them. Other papers using chemical tests and carefully controlled smelling tests show that there is variation in excretion of sulfur compounds in urine after eating asparagus.
Now when some of us eat asparagus, shortly afterwards our urine smells very stinky, something like rotten or boiled cabbage, or even ammonia. But not all of us can generate, or make, this odour. Now here's something surprising. Not everybody can detect, or smell, this odour.