"A Canadian inventor has designed a computer mouse steered by movements of the nose and eyelids. The invention, dubbed a "Nouse," is meant to help people with a disability use a computer."
I hope the inventor didn't get inspiration from this paper...
A Nose Gesture Interface Device: Extending Virtual Realities
This paper reports on the development of a nose-machine interface device that provides real-time gesture, position, smell and facial expression information. The DATA NOSETM — Data AtomaTa CORNUCOPIA pNeumatic Olfactory I/O-deviSE Tactile Manipulation[Olsen86, Myers91] — allows novice users without any formal nose training to perform complex interactive tasks.