What a smell looks like

Smells are normally invisible, but an engineering lab at the University of Colorado Boulder uses lasers to bring odors to life. The scientists' experiment allows them to visualize odors as they move through space, an innovation that could help train dogs - or robots - in rescue missions.

The research is part of a new nationwide project, sponsored by the National Science Foundation, to build a robot that can smell.

Creators:
Nsikan Akpan
Matt Ehrichs

Producers:
Jenny Marder
Patti Parson
Richard Coolidge
Travis Daub
Vanessa Dennis

Videographer:
Brian Gill
Jordan Vesey

Graphics:
Megan Crigger

Special Thanks to
Priscilla Shanks

Music:
Bizarre Waltz by David Szesztay (FMA)
Turning on the Lights by Blue Dot Sessions (FMA)
Rafter by Blue Dot Sessions (FMA)
Fog Lights by VYVCH (FMA)

Additional video: Getty Images