New one for me, so just lately i would get out of the car after getting somewhere and smell antifreeze but no leakes, and it smells like in the front of the car. This has been happening for a few weeks, now when I turn on my defrost I get a hint of antifreeze smell, and recently i noticed after it warms up I have good warm air but when I idlefor a few its cool air but hot after i get going again. I have my SCT scanner running cooling temp when i go to work in the am and as it warms it gets all the way to 216 then the termo must open and temp goes to termo setting of 190, and when the cool air comes out the temp still runs at 185 to 190. The water pump is a year old, same with the thermo, did a radiator flush at the same time. I have my thoughts of heater core, but some of these things dont add up, Ideas?