If you mean "why", then the answer is that there is a leak in the heater core.
Your heater core is leaking.
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.
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.
it's a sweet smell, but it's a nasty smell. it smells like burning coffee and antifreeze. sounds weird but that's pretty much what it smells like
It is a 1998 Chevy Blazer. I don't know how I posted this topic in the first place???
your heater core is probably bad.
If the heater has a sweet smell it could be that the heater core is leaking engine coolant. When the leak gets worse you will have a wet floor on the passenger side and the windshield will fog up when you turn on the defroster.
The smoke is actually antifreeze mixed with air. The most common cause of this is a leaky heater core.
Sounds like a leak in the heater core.
Telltale sign is WHITE smoke coming from the exhaust that smells like Antifreeze.
Some people say that the smell of hot antifreeze smells like mold. It could be possible you are smelling the antifreeze from the engine.