If you’ve noticed a rotten egg smell coming from your car’s exhaust, it's not just unpleasant—it usually signals a problem. This foul odor isn’t something to ignore, as it often points to issues within your vehicle’s exhaust system, fuel system, or engine. A smell like rotten eggs usually indicates the presence of sulfur, and while your car isn’t filled with eggs, the cause can be traced to a few specific parts under the hood. So, why does this happen, and what should you do about it? The Role of the Catalytic Converter The most common culprit behind a rotten egg smell from your exhaust is the catalytic converter. This part plays a crucial role in your car's emissions system by converting harmful gasses like hydrogen sulfide, a compound that naturally contains sulfur, into less harmful substances. Under normal circumstances, the catalytic converter should neutralize any potential sulfur smell. However, when the catalytic c ... read more