To enhance TV watching and create a more immersive experience for viewers, television manufacturers of the early 1960s dabbled in Smell-O-Vision. As the name implies, Smell-O-Vision sought to synchronize specific scents to the content being displayed on the screen. While Smell-O-Vision generated interest and curiosity, it faced too many challenges to make it marketable. TV sets had to come fully stocked with a wide range of scents. Customers complained that smells lingered or caused allergic reactions. And some were, in the words of Spongebob Squarepants, “smelly smells that smells smelly.”