Something is wrong with the catalytic converter.
Car exhaust can smell like rotten eggs when the fuel has a lot of sulphur in it.
That could be a leaking exhaust system. A leaking exhaust system is very dangerous! Please have it checked out ASAP.
Too much sulphur in the fuel you are using. Buy gas from a different dealer and drive at least 100 niles or more. The excess sulphur is being oxidized by the catalytic converter into sulphur dioxide (rotten eggs).
The fumes are the burnt exhaust gasses.
You most likely have a leak or your car is overheating. If you are smelling it in the car then in all probability the heater core is leaking.
Every Car Product has it's own smell. Overtime there is a possibility that the smell will remain on/in the car. But it will depend on the product and the strength of it's smell.
it depend on the car and how old it is it could lead to wore things
It makes your car smell somewhat new, but be careful as too much will make it smell like a cab, unless of course you want to go for the cab smell.
Kerosene smell car carpet
If you've thoroughly washed the car (especially underneath) and the odor remains as crazy as it may sound the next thing to check is the car's battery. Automotive batteries that have a "mechanical" or physical failure (i.e. leaking or are shorted internally and often times begin to smoke) emit a sulphur odor not unlike the smell of a skunk or of a natural gas leak. If the odor is in the engine compartment chances are that's where the problem is.
if same problem as i had you mean the smell of petrol. probably the fuel lead which runs along sort of under the windscreen wipers. so you'll get a good wiff if you put the fan on if its a burning smell it could possibly be your clutch, take it to a garage just to be safe :D
There is a product called Zero Odor that when sprayed in the car will remove the urine smell.