But they suggest what might happen when headspace capture further develops, when scent scientists combine with technologists to produce new ways of rendering aroma as a record of the world. While it's likely that the future will see more commercial uses for scent -- the scent of Subway bread, exuded onto a city sidewalk; the aroma of coffee, squirted into a bus; the Smell-o-Vision idea, put to marketing purposes -- it's just as likely that scent capture will also find itself in the hands of everyday people.

— Read more at What If You Could Snapchat a Scent? at the Atlantic. Hat tip to Monika!