What is the definition of Populations Fumes?

"Populations fumes" is a whimsical term that humorously describes the noxious, exhaust-filled atmosphere that results when too many people crowd together in a confined space, like a bustling city street during rush hour. Imagine this:

---

"As the morning rush hour hit, the city's populations fumes turned into a smog so thick it could give a penguin a run for its antics, sending the neighborhood into a frenzy of confused chirps and sniffles."