An entertainment format mentioned in the news items on the FACT machine. From the name, it's probably a new form of interactive experience where the viewer is given tactile and olfactory stimulation as well as visual and auditory.
A similar experience is described in Aldous Huxley's Brave New World. Known as the 'feelies', the viewer has to be touching protusions on their chair to get the full effect. Given the prevalance of designer drugs in The Longest Journey such as Rapture (cf. soma in Brave New World) which 'makes dreams real', INSense might use chemical gases to facilitate this effect.