It's leaking somewhere, possibly in your heater core.
If antifreeze is filtering through your ac vents, other toxins could also be coming through. Don't take chances; see a mechanic.
Chances are it is a busted heater core. It your window has a fog on it when you turn on the ac or heater.
sounds like a leak at the heater core.
it could be the heater is leaking!
Anti Freeze
Leaking heater core. Replace it.
If there is the smell of anti-freeze, you're almost sure to be replacing the heater core.See "Related Questions" below for more
It could be a small enough leak that it evaporates before dripping.
water in oil The smell of anti-freeze at the tail pipe (sweet, sickly smell)
Yes anti freeze has a sweet smell, at least in comparison to the normal fuel and oil smells of a car
Might be a leaky heater core, the anti freeze in the coolant has a sweet smell/taste.
To my re-collection, anti freeze will have an oder such as camphor. I haven't really had the opportunity to burn anti freeze or the experience of leakage on a hot engine or manifold. Hey, someone may have a better answer or a different type of smell.