What are the effects of caffein olfaction? Does smelling caffeine share equivalent effects on our central nervous system to those immediately apparent when ingesting? More precisely, does the aroma of coffee necessitate a beneficial neurological response?
From Time Magazine's You Can Now Inhale Caffeine Instead of Drinking It article: 


  Forget coffee and energy drinks—now you can inhale your caffeine. ...
     Each inhaler boasts a pretty small amount of caffeine, which the
     company says comes from natural sources like guarana, taurine, and
     ginseng (stimulants that are also common among energy drinks).


Since it can be absorbed into your body (nasal, oral mucosa and lungs), there would be a neurological response, hopefully positive.