In the following you will find some important information:
Our nose is the only sensory organ that directly transfers its perception to the brain. From there the sense is immediately sent to our limbic system which is responsible for triggering emotions. As a result an immediate reaction is induced. Depending on the fragrance composition, this reaction can be energizing and concentration enhancing, pleasantly soothing or a warm relaxing feeling.
All this happens subconsciously because at the very point of noticing the fragrance, it has already arrived to our brain and has triggered the respective emotion.
Consequently it can be said that the emotions that are being triggered by the respective fragrance in our brain cannot be deliberately controlled.