If the car heat has a fresh air setting, then it could be drawing air from outside of the vehicle. The fumes are most likely coming from a problem under the hood.
Possible leak in gas line. Must be some sort of air leak in the heater box under the hood. Heater is pulling fumes into car through the leak in it.
Breathing fumes from antifreeze cannot be good for your health as antifreeze is poisonous. If you are smelling fumes in your car you probably have a heater core leak. I recommedn you have this repaired ASAP. The only fix for a leaking heater core is to replace it. A very labour intensive job that is quite expensive.
you have a bare wire touching on your blower motor
exhaust leak or a possible fuel line leak
To get the kerosene smell out of clothing can be challenging. The first step is to hang the clothes and let the fumes air out, outdoors if possible. Then you can wash them with a good detergent. Wash as many times as necessary to get the smell out before drying them.
The relay is bad.
Only reason would be that the heater core is leaking.
More than likely your heater core is leaking. The only fix is to replace it.
Only if you want to smell the fumes all the time. Code says it should be through the roof or above the edge of the roof.
legionnaires disease **** Try changing the cabin air filter behind the glove box.****
You are likely in an antarctic region.