Had rotten egg smell from the day I got the car. I was told it was because the fuel not properly combusting. Don't know how to fix the problem.

Car was new 24 FEB 04. By April, I thought every intersection in Newark, Ohio had bad sewage smells. The smell was and still is most noticeable when the car is stopped (traffic light, stop sign, etc) when, of course, the fan is running (AC or heater). I haven't tried anything yet, but the heating season (and the smell season) is here again. My first Toyota, a 1990 Camry, never had smells.