Item from Futurama by Matt Groening & David X. Cohen
A telescope-like device that detects odors over astronomical distances — one of the Professor's more practical inventions, if 'smelling things in deep space' qualifies as practical.
The Smell-O-Scope allows users to detect and identify odors across interstellar distances. Professor Farnsworth invented it and mounted it in the Planet Express control tower. It has been used to detect approaching threats, locate planets, and identify various cosmic phenomena by their smell. The device was damaged during the events of Bender's Big Score but was later rebuilt. It's actually based on real scientific concepts about detecting atmospheric chemical compositions of distant planets.
A large telescope-style device mounted in the Planet Express control tower, with a satellite dish-like collector and an eyepiece replaced by a nose-piece. The user literally smells through it like a telescope for odors.
Also known as: Smell-O-Scope