What does a city smell like at 5am?

I’ve been watching the shift in light from my balcony for weeks now—just before dawn, when the streetlights still hum but the sky’s gone that quiet blue-gray. Last night I caught it: wet pavement, diesel from a delivery truck idling two blocks over, and something faintly sweet, like old fruit left on a windowsill. It reminded me of a memory I can’t place. What’s your city’s earliest hour smell? Not the one you’d expect—more the one you notice when you’re half-awake and suddenly aware of being alive.