Hello, for the past couple weeks, whenever I get out of my car after a long drive (about 30 minutes or longer) the outside of my car has an aweful odor of rotten eggs. I believe this may be the catalytic converter?!?!? Is this correct? If so, is this covered under warranty? That would really suck if the catalytic converter went in under 3000 miles and less than 4 months since I have had the car. Please let me know. TIA