Exhause Fumes.
Fumes which are a byproduct of combustion within the engine block, most commonly Carbon Dioxide and Carbon Monoxide.
Try hosing it down - and scrubbing - with hot soapy water.
The fumes are the burnt exhaust gasses.
The danger lies in asphyxiation by the engine's exhaust fumes in a close non ventilated enclosure .
dildo blower
The car's engine will die. Although it probably doesn't do any damage to the engine, if exhaust can't escape the car, then the car can't filter out fumes to intake fresh needed to run the engine.
Car fumes are not very good for the environment and can cause global warming.
exhaust fumes of a car
Exhaust
to take fumes and nasty gases away from the engine and to the outside of the car and to clean up emissions as much as possible.
After you are dead car fumes (exhaust) does not do anything to your body. However, if while you are alive you are exposed to car fumes in a small, poorly ventilated space, you may become dead.
maybe catalytic coverter clogged, leaking coolant hoses to/from heater core, hopefully this helps.