A "smell" is added to propane the same as a "smell" is added to natural gas. Some people describe it as being like old cabbage. I can attest that it is not pleasant and unless you have very poor sense of smell you will notice it. Don't ignore it if you do. Propane is heavier than air and will lie in a low area and is very combustible.
I dont know why it might smell like propane in your case but my car runs on propane so the exhaust has a propane sorta smell to it. In your case id check your exhaust. You might need a new catalytic converter or something may be leaking under your hood.
sounds like an exhaust leak, or a fuel leak. that depends on the smell.
Could be a leak in the manifold, or a hole in the exhaust, and when you stop the car there is no pressure blowing off the fumes, so it floats up into the car.
No they don't smell like anything
may be pre-cat exhaust leak.
Propane has been given a sulfur-like smell for leak detection.
Well if you have a hole in your exhaust like rite under your car, it is able for the exhaust fumes to get into your car and kill you ;P
There is no smell, unless somebody has used something like 22a freon which is actually propane and may have a sulphur smell
don't ever smell your car's exhaust.
Barring any fuel leaks I would say that your charcoal canister is probably in need of replacement. they can fill up with liquid after some time making them useless and will smell of gas. Also it may be an exhaust leak if it is not an actual gasoline smell.
Is this a trick question?? This is wat i sound lik: "why does my cars EXHAUST smell like EXHAUS?its also SMOKES at START UP... Ima leave that as that
smells like banana and its can give you a headache due to the nitroglycerine fumes ect...