Human beings are visual creatures.
Professor Suslick and his students have invented a simple technique to translate smells into visual patterns. The color changes in an array of special metal-containing dyes reflect the interaction of the chemicals that make up different aromas with the dyes. Detection limits better than 10 times that of the human nose are possible in many cases with a total number of potentially distringuishable chemical species exceeding 10 billion. We are now in the year 2001.