The rotten egg smell is mainly associated with sulfur. If it comes from inside your car, it might be a cause of serious concern as fuel contains sulfur converted to a neutral-smelling compound during combustion and afterward in your car’s emission system. ...
The converter is a part of the emission control components that reduce harmful emissions by modifying exhaust gasses. When they are busted, they cannot process the gasses, resulting in making your car smell like rotten eggs. The only fix is to replace the converter. If it does not show any ...