In addition to light, sound, color and other design dimensions scent is increasingly used to influence human emotions and behavior. Aromatherapy is the discipline that has developed this expertise and knowledge of centuries. Scent Marketing is currently an obvious case. But there are also non-commercial contexts as this story from Eindhoven reports.

The web facility Google Trends shows how often a particular search-term is entered relative to the total search-volume across various regions of the world, and in various languages.  The horizontal axis of the main graph represents time (starting from 2004), and the vertical is how often selected terms are searched for relative to the total number of searches, globally.

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Our comparison of a few olfactory terms reveals some peculiar pattern: