No one is safe on this chair!
The gas-sensor in the seating will detect every fart and activates the leds in the chair legs. The mystery of who farted is history!
The shape of the chair is inspired on the methane molecule C4H. The chair legs are H-beams in the shape of a C.
In the video below you will see a demonstration with a firelighter, The sensor also detects propanegas.