Ominous Fog

Theme Parks

 * The last room of Psycho: Through the Mind of Norman Bates, a haunted house from Universal Studios' Halloween Horror Nights 1999, took place in an oversized bathroom with steam giving off this effect.

Western Animation

 * The Simpsons parodies ominous fog in the Treehouse of Horror short featuring werewolf Flanders. "Guess I forgot to put the fog lights in!" Also parodied with the other Treehouse Of Horror short with the fog that turned people inside out.
 * Justified in the Scooby-Doo, Where Are You! episode "Go Away, Ghost Ship," in that the mysterious fog that accompanies the "ghostly" Redbeard's pirate ship is produced by dumping blocks of dry ice into the water.