A little-known device invented to allow two people to communicate across large distances that could collect and transmit audial and olfactory information. Despite the inventor's enthusiasm, this never caught on, and only a few small phone companies in the midwest provide transmission of the smella-signal.
The commercial went something like this:
For only fifty dollas, you could have your own.
It would be like one great big smelly ice cream cone.
When you pick up a telephone to find that a previous user has left a nauseating odor on it, such as Avon perfume or burrito breath.
Don't answer that smellaphone, or you'll regret it.