You probably have a leak in the heater core.
Low on engine coolent/antifreeze. A leak somewhere. A bad thermostat. Replace if needed. Bad fan clutch.
The car will over heat.
Coolant leak, possible heater core. Suggest to have it pressure tested to find leak.
Your heater uses somthing akin to a mini radiator to transfer heat from your engine to the cars interior. However, if you're smelling antifreeze, you have some type of leak.
An antifreeze leak.An antifreeze leak.
A leak.
it has a bad rear heater core
heat core. leak. thermostat. no antifreeze.
Find the leak, and fix the cause.
you have to find where the leak is first.
you got an antifreeze leak
Sounds like a leak.