Auto Perfume Sprayer is a work-in-progress device intended to check a person's odor as they return home. A smell sensor feeds readings to a microcontroller; when the result is classified as 'BAD,' a servo presses a perfume bottle to spray automatically.

Makers BULAT IARKIEV and Yadanar Htay describe the project on ProtoPedia as a way to respond to odors that people may not notice themselves, such as after exercise. The project is currently marked as in development.