The Aromajoin system includes an emitter that works with cartridges, a bit like the ink cartridges in home printers, that contain solid hunks of packed smell molecules. The cartridges are supposed to provide three-second bursts of smell and last for 45,000 uses. To sync those smells with video, Aromajoin emitters come with software that lets video editors drop in smells the way they would drop in parts of a soundtrack. So far, Aromajoin has sold 30 of its device packages at a cost of $2,550 each, Tech in Asia reports. One customer was a small museum, run by a Tokyo chemical company, that showcases Japan's "culture of cleanliness."