what is going on????!! i'm on a road trip and it smells like rotten eggs every time i stop at a light and its coming through my vents too. its disgusting. i ran over a rock yesterday (could not swerve out of the way) and it started around that time. my battery is also dead so i don't know if this is a problem caused by that. my friends and i thought the battery was leaking hence the smell. we heard a fizzle from the battery when we stopped the car. help?