[Reelin]

I won't claim it's impossible, but... olfaction boils down to a small molecule protein interaction, similar to drug discovery. The scales in question are far too small for typical imaging devices; these objects are far smaller than the wavelength of visible light. CryoEM and X-ray diffraction are used in these domains, but don't apply in the manner you appear to have in mind. I suppose CryoEM technically counts as "clever use of a camera" though.