Magic Garbage
Magic Garbage is magical garbage left behind in Brooklyn by King Koopa and the Koopalings in The Adventures of Super Mario Bros 3 episode Recycled Koopa. It mutates anyone who comes in contact with it into a Koopa Zombie. Failure to stay in contact with the garbage will result in the victim being changed back to normal. Mario & Luigi finish the Trash Smasher shortly after Mario's mutation is complete. However with the Trash Smasher Luigi is able to successfully clean up all the trash, restoring Mario and the city of Brooklyn to normal.