From Gizmodo:
Randy Sarafan decided to make this office chair to help “accurately document and share life as it happens,” which is as admirable a cause as there ever has been to open a Twitter account. A natural gas sensor does the sniffing; an Arduino does the thinking; an Squidbee wireless module does the communicating; Twitter does the sharing.
Go here if you want to know how to make your own chair-fart-sensor-twittering-thing. Go here to read the Office Chair’s tweets. Go here to buy gas masks.