One thing that happens when Winter comes is you lose the ability to smell much outside. The cold air constricts the blood vessels in your nose, and there isn't as much to smell anyways because the frigid temperature keeps things from decaying. And that's is much of what we are smelling outside. Decaying stuff.
Well, today we reached a temperature(50F) where I could actually smell things besides car exhaust. It wasn't the pretty smells of Spring though. Not flowers and grass. It was rougher smells like dog poop that filled the air and my nostrils. My landlords dogs have been pooping in the yard all winter and now, like the Dawn of the Dead they have risen again. And it's not pretty... the smell is not pretty at all. But I'm okay with it, because I know that it this means that things are changing and finer smells will soon arrive.