Odor Limits is "a multimedia exhibit that explores the potential of smell to redefine aesthetic experiences", and is currently showing at the Esther M. Klein Art Gallery at the Philadelphia Science Center:

The second in a series featuring olfactory art (the inaugural, highly successful “Scent is Life” debuted in May 2006), “Odor Limits” showcases four international artists whose work demonstrates how scent can prompt thought-provoking insights into cultural differences, environmentalism, personal identity, spirituality and the philosophy of the body.

“Most people don’t fully appreciate the communicative and evocative power of smell. As the leading research institute dedicated to the science of taste and smell, Monell values the opportunity to partner with the Science Center to sponsor ‘Odor Limits,’” stated Mark Friedman, PhD, Associate Director, Monell Center. “This multi-faceted exhibit will inform and educate the public about the many ways smell influences our lives.”

[...] “Odor Limits” is curated by Jim Drobnick and Jennifer Fisher, founders of the Toronto, Canada curatorial collaborative DisplayCult. The artists all have worked extensively with scent, pioneering its use in contemporary art. They include Oswaldo Maciá (London), Jenny Marketou (Athens/New York), Chrysanne Stathacos (Toronto/New York) and Clara Ursitti (Glasgow).

Odor Limits runs through 6/28. (quote via senseofsmell.org, image via kleinartgallery.org)