There could be many problems related to smelling gas and seeing white smoke from your tailpipe. Some suggestions would be the head gasket. If the smoke has a blue tint to it, it may be oil related. If your car has a turbo, it may be the turbo needing to be replaced. To be sure, you can have a mechanic do a diagnostic on it.
The smell of rotten egg is coming from your catalytic converter that is plugged up White smoke is an indication of water (usually antifreeze) in the exhaust.
oil getting by the rings causes white smoke and oil dripping out of the tailpipe.
white smoke coming from my tailpipe of my Honda civix lx 1997?
water
It could be transmission fluid or coolant, or a problem with the catalytic converter.
water
Yed
they have elected a pope? in cold weather it is normal to see white smoke coming out of your tailpipe. the one you have to worry about is the black or the blue smoke
because it can
I feel these are unrelated but you can investigate a leak in the hoses leading to the heater core as they maybe leaking onto the exhaust pipe, that would produce white smoke, but not from within the tailpipe exhaust. Water and oil leaks will produce white smoke the smell will help you determine which it is.
Usually the engine is burning coolant.
I'm not a mechanic / technician but if white smoke is coming out of your tailpipe with the engine warmed up it sounds like you are getting engine coolant into one or more of your engine cylinders . ( bad head gasket / warped cylinder head ) Is the coolant / antifreeze mix also going into your engine oil )