You used to be able to buy leaded 110 gas as Sunoco in the early 2000's. It would make your exhaust tips turn white and had a sort of candy like smell when combusted.
I remember people with various "tunes" at the racetrack would run this stuff. It definitely smelled like candy!
You can buy it online from Sunoco
https://petroleumservicecompany.com/sunoco-supreme-112-octan...
I think they only sell the unleaded race gas at the pumps now but I may be wrong.
Wait 'til you learn about avgas!
You can still buy the same stuff at an airport or race track.
AFAIK that's why leaded paint is bad for children: it tastes sweet so they continue licking it/eating the chips of paint that fall off the wall