Originally developed to measure a person's sense of smell, the Fragrance Jet II could be used for different kinds of fragrance generators in the future.

The Fragrance Jet II, pictured above was unveiled at Keio Techno-Mall 2010 by researchers from the Okada Laboratory at Keio University in Tokyo, Japan. Devised for use in medical care facilities, the researchers were interested in how a person's sense of smell changes and declines with age. Currently in development, the apparatus includes pulse jets that release a fragrance in controlled, short spurts. Adjusting the timing of the pulse jets can alter how difficult it is to smell the scent. The Fragrance Jet II delivers concise data on the strength of a person's sense of smell. The device contains four types of fragrances, which can be diffused separately or in combination with one another. The researchers also describe future use of the fragrance generator:

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