Octane and Heptane. Some producers might add proprietary engine detergents to the mix.
Inside the gas tank
it's compressed and is ignited
No, a gasoline generator cannot be used inside unless it is properly vented, this should only be done by a licensed electrician. You can die or become seriously injured from carbon monoxide poisoning.
I wouldn't even drive it another foot, if I could avoid it. Get it to a mechanic. It's clear that gasoline is leaking somewhere.
The unburned gasoline accumulated in the crankcase is recirculated by the PCV valve to the intake air and burned again. The unburned gasoline in the exhaust reacts inside the catalytic converter, making carbon dioxide and water.
Hole in the gas tank
Assuming you mean the outside of the compressor, no. The gasoline (petrol) may damage the seals. And don't use gasoline to clean the inside of the compressor either.
It could be a bad fuel pressure regulator.
Gasoline ? Soak up as much of the gasoline as you can with a cloth. Any that you can't soak up will eventually evaporate so leave car in the sun with doors wide open
It is located inside the Gasoline Tank. Need to replace only if there is a problem.
Leaking fuel. Get this fixed ASAP.
Prevents explosions on inboard gasoline engines.