If it smells like a coolant leak than you must have a slight leak somewhere. I assume you smell the coolant outside of the car and not IN the car. My guess is that the coolant is evaporating off the hot engine before it has time to "pool" somewhere. That'* the "smell" part. It'* probably such a small leak that you don't notice the coolant loss. If you look at the engine from underneath your car, you might see some moisture build up somewhere. Also look around the water pump'* weep hole at the bottom of the pump for any moisture.
2006 Salsa Vibe
2002 Snap Orange Beetle - Turbo
1991 Olds "Orphaned" 88 - Donated to Science!