I know this sounds really crazy but I hope I'm not the only one to experience it...

Sometimes while driving aggressively I experience a mild smell that stinks like someone laid a fart.. I know this is nuts.. It usually dissipates after a few seconds. It only happens if I need to do something aggressive.. like downshift real quick/aggressive and floor it to pass a car.. I don't know if its something in the engine, or the tires or what. I saw another post about a burning smell that may be the clutch. I guess this could be the clutch as well, but it's definitely more of a light fart smell than a burning. No other way to describe it.

Has anyone else experienced this? Does anyone know of a fluid or anything that could produce such a smell?