A bit abstract, but not much. I'm supposed to be writing a paper, so sssshhhhhhhh...
Air
The air in New York is smelly. It's smoky and dank and dirty. Apart from Los Angeles, she's willing to bet that it's the most disease-infested air in the country; the Ankh-Morpork of the earth.
Either way, she takes a deep breath as she steps out of the hospital after her first day as an attending.
It's free, it's alive, it's hers, and for a few seconds, before her nose catches up with her brain, it's the sweetest air in the world.
Reference: Ankh-Morpork, of Terry Pratchett's satirical Discworld series, is a combination of London, New York, LA, and any other major city that's ever had pollution issues, corruption, and really bad sausage vendors. (Example: The river that divides Ankh and Morpork doesn't flow so much as ooze. It's hard to drown, but easy to suffocate.) It's a Very Nice Place to Visit.