Smell of antifreeze from AC/Heat

Has anyone experienced any issues with the smell of antifreeze coming from the vents when the heat is on. I realize that this is typical when the heater core is gone, but I am not loosing antifreeze nor have any puddles of antifreeze.

I have not had this problem on my S70 but would think that there still a small leak in the heater core heat exchanger. There's a lot of air blowing by it that can evaporate the coolant until it gets really bad.

I'm having the same issue with mine. I'll probably tear it apart and figure out whats going on....I figure the longer I wait the worse it's going to get....errr