What does freon smell like?
Odorless. What you are smelling is antifreeze, leaking from the heater core in your car.
I DISAGREE: Freon smells a bit like ether and should not be inhaled.
Freon is a gas that does not have a color or smell, however, you should NOT breathe it.
More Information on Freon Below:
(It CAN have an Odor, and is Dangerous in enclosed spaces!)