How many of your guys that get this smell run 87 octane? I bet you that's your problem. 87 octane will cause the smell when driving the car hard. Switch to 91 and you'll notice it less.

It's just the way the cars are.

 

I had this problem on another ride (a Ford Contour) and it turned out to be a non compatible gasoline (with the catalytic converter).
I changed gas and the problem disappeared. I was told that if the converter gets too 'poluted' with that incompatible gas residue, it may have to be replaced.
Try a few tankfuls of another brand of gas.
G/L
C.

 

Don't worry. I've got a 2001 Sequoia and the rotton egg smell is 1,000,000 times worse with the Sequoia than it is with my FI'd G35. I'm running so rich with the supercharger set up that I get black exhaust tips after the first 5 miles of spirited driving after a good cleaning. If anyone would have a bad odor it would be me (and I can smell the exhaust if I roll down the windows and am in the garage), but it is still nothing compared to what the Toyota can produce.

 

Could also be a whiff from the guy in the car you're driving behind

 

There is usually a condensation drain for A/C systems, you see it making
a puddle under cars parked with A/C running.

Maybe that drain hose is blocked/kinked, causing moisture to remain in the vent system, later it will degrade and smell bad ?

 

i snuck into your car the other night, had the late night taco bell menu and departed.

 

Whoever smelt it, dealt it. Talk about diggin' up a long-dead thread! That in itself stinks!

 

Is your car a 6MT? If it is you could be burning your clutch.

 

I had a similar smell omitting from my engine bay shortly after
servicing my vehicle...

Turns out the service employee left a pastry on the engine cover, which then
fell into the engine components and melted...

no joke...

 

fat bastard you should make them drop the engine and take out the pastry lol