Novelty Cool Play: The Romance of Bicycle Exhaust

A passer-by named Person A told me that when he saw the so-called exhaust of bicycles in the title, he thought it referred to a mixed jet (commonly known as fart) composed of 400 components including nitrogen, hydrogen, carbon dioxide, methane, oxygen, ammonia, hydrogen sulfide, indole, fecal odor, volatile amine, and volatile fatty acids...