Malfunctioning emissions system. Get this repaired. Engine probably running rich from a leaking fuel pressure regulator. If there is fuel in the vacuum line the regulator is bad.
Car exhaust can smell like rotten eggs when the fuel has a lot of sulphur in it.
Most likely your exhaust is rattling and the smell is because your catalytic converter is bad
From exhaust?? Have catalytic converter checked.
if the exhaust has a foul smell like rotten eggs most likely the cacatalytic convert is a bad
time for a new calitic converter its befor the muffler on the exhaust system
most of the time you will smell a rotten egg smell if its bad, or if you hear a rattling noise coming from your exhaust
You may have an exhaust leak. Better get it checked out. Any exhaust leaking into the cabin/passenger area can be potentially hazardous and deadly.
probably the catalytic converter- or you child is smoking in the car
Some farts smell of rotten eggs because they contain Hydrogen Sulphide - which is what gives rotten eggs their smell!
proscuitto shouldn't smell rotten, it should smell salty and just a bit meaty.
There isn't much a person can do to stop the stinky smell of exhaust from the muffler. This smell, sometimes like sulphur or rotten eggs, is a by-product of the fuels burned.
A rotten egg smell is usually a sign of a failing catalytic convertor and also at times failing oxygen sensors. try the cat first and that should alleviate your smelly problem. answer before you change expensive catalictic converter, try using a different brand of fuel sometimes fuel company additives will make your exhaust smell like rotten eggs