Hehe. I don't care much about the smell, but I can tell you the leaded AV gas I use in all of my small motors, directly leads to me not having any engine knocks, easier starting, cooler at run-time, and in two decades of chainsaw operation I haven't had to clean or "rebuild" a carb. Yes, leaded gas is a whole lot "better" technically, than all of the additives we put into "gas" today. Gas really should be called something completely different these days to differentiate it from what it once was.