Your heater core is leaking.
If you mean "why", then the answer is that there is a leak in the heater core.
your truck is likely leaking coolant due to a blown head gasket making white smoke and coolant smell
Condensation in the exhaust train is perfectly normal. It should dry out after several minutes. If it smells like antifreeze, suspect a bad head gasket.
Have you spilt some on the radiator?
smell of antifreeze and no visable leaks usually indicates that the heater core needs replacing
if it smells like antifreeze inside the cockpit then your problem is the heatercore, since you can't see it.
your heater core is probably bad.
It is a 1998 Chevy Blazer. I don't know how I posted this topic in the first place???
Sounds like a leak in the heater core.
The smoke is actually antifreeze mixed with air. The most common cause of this is a leaky heater core.
Yes anti freeze has a sweet smell, at least in comparison to the normal fuel and oil smells of a car
Some people say that the smell of hot antifreeze smells like mold. It could be possible you are smelling the antifreeze from the engine.