Scent of Mystery is a 1960 American mystery film directed by Jack Cardiff and starring Denholm Elliot and Peter Lorre. It was the first film to use the Smell-O-Vision system to release odors at points in the film's plot, and the first film in which aromas were integral to the story, providing important details to the audience. It was produced by Mike Todd Jr., who, in conjunction with his father Mike Todd, had produced such spectacles as This Is Cinerama (1952) and Around the World in Eighty Days (1956).

The film was later re-released in Cinerama under the title Holiday in Spain without Smell-O-Vision. In 2012, the film was restored, reconstructed and re-released by David Strohmaier. In 2015, a version complete with reconstructed scents was presented at screenings in Los Angeles, Denmark and England.

Cardiff called it the "one film I want to erase from my memory. The reason for this is that, through no fault of my own, the film was a complete disaster."