I posted a few months ago about a mysterious odor I noticed at every F1 race I've ever been to. Its a very mysterious chemical/organic smell that I could only describe partially accurately as "Chinese hot mustard and lacquer thinner."
Well, I've finally identified the source after a couple decades of wondering.
I recently bought some fuel for my lawn equipment. Its a special super high quality gasoline that comes in a can and its about 4 times as expensive as the premium you'd buy at the pump for your sports car. It is 94 octane (which is about the highest pump street unleaded octane you will find in the USA by the way.) This fuel is crystal clear. It is ethanol free gasoline which is nearly impossible to find these days in some parts of the USA. And it has a very long shelf life. VP Racing Fuels makes it. Its called SEF94. Here's a link...
http://www.vpracingfuels.com/sef-small-engine
Anyway, when this stuff burns it gives off an odor that smells just like the mysterious smell at an F1 race. I was shocked to stumble upon this.
I had always read that the fuel the F1 cars is "basically the same as the premium pump fuel you put in the car you drive on the road." Well, It seems that it may be similar (94 octane with R+M/2 method) but this stuff is an exotic, extra pure version of gasoline. It smells more like lacquer thinner (while in the can) than it does gasoline. My chemist friend always tells me there are countless formulas for "gasoline" and that gasoline is a generic word to a chemist. This fuel, and the fuel they use in F1 are top shelf gasolines obviously.
I finally found the answer.