Glenavon looked to have earned a point when Grant headed a Kyle Neill free-kick to the net on 77 but Cliftonville kept attacking in the closing stages and Caldwell held his nerve to chip over Plummer.
Its reaction with the odour molecules changes a detector's electrical resistance, and this signal is fed into a neural net (the closest that computer technology has got to imitating the pattern-recognising abilities of networks of nerve cells) to work out what is being smelt.