Smilex

"That luscious tan. Those ruby lips. And hair color so natural, only your undertaker knows for sure."

- The Joker

Smilex is a fictional chemical weapon featured in the original Batman film series. It appeared in the 1989 feature film Batman, directed by Tim Burton.

Description
Smilex is the name given to a chemical weapon developed by Jack Napier after he had been exposed to toxic chemicals which turned him into the laughing maniacal clown known as the Joker. The effects of Smilex caused a dramatic physical affect on the body, giving the victim extremely pale skin, and dark red lips, similar to the way that the Joker looked. Another side effect included fits of uncontrollable laughter. Exposure to this chemical was not only toxic, but fatal. The Joker manufactured a massive volume of Smilex at the closed down front company, Axis Chemicals.

Two fashion models named Candy Walker and Amanda Keller were the first to fall victim to the Joker's Smilex. Three more victims were discovered at a beauty parlor in Gotham City. Two Action News reporters, Peter and Jackie, began reporting on the mysterious deaths. During the broadcast, Jackie began laughing maniacally and fell out of her chair. The news feed was then cut and taken over by a fake commercial featuring the Joker in a supermarket. Not only did he lay claim to the outbreak of the Smilex symptoms, but he also pointed out how the chemicals used were a combination of materials found in everyday household items, ranging from hand soap to hair spray, to shampoo, to deodorant. A single item by itself would not activate the Smilex, but a combination of say perfume coupled with body wash would prompt the chemical's effects.

The Joker's ultimate goal was to fill a dozen or so extra-large helium balloons with Smilex and then discharge it over all of Gotham City, infecting millions of people. Gotham's Dark Knight protector, the Batman, figured out the chemical formulas used in Smilex, as well as the Joker's plot. Using his Batwing jet, he clipped the strings carrying the balloons, and they floated harmlessly into the night sky. Presumably, they were recovered later before there was any possibility of leakage.