In 'Charlie and The Chocolate Factory' (2005), Charlie’s father works at the Smilex toothpaste factory

Smylex was the name of the poisonous gas created by The Joker in 'Batman' (1989), also directed by Tim Burton pic.twitter.com/xMjiyfjoqh

— Movie Easter Eggs & Details (@FilmEasterEggs) July 25, 2020