The smelling screen is a regular television with four fans mounted along its edges that pump odors in the right direction. It generates scent from hydrogel “aroma chips,” which are heated to produce vapor. Using the fans at varying rates, the system can purportedly give the illusion that a scent is coming from a certain place on the screen. It’s this directional accuracy that sets the smelling screen apart from systems in the past. The researchers have only been able to generate one odor at any given time so far, but hope to develop cartridges with multiple scents that can be swapped out for different movies and programs.