Mood fragrances,also coined as"aromatherapy",are said to have a powerful effect through our sense of smell.simply by inhalation,mood ragrance oils submit an immediate olfactory response and they are readily absorbed into the bloodstream.these fragrances can create a pleasing environment.
   smell(olfaction)is the least understood of our five sense and yet is perhaps the most powerful.the olfactory membrane is the only place in the human body where the central nervous system is exposed and in direct contact with the environment.when an olfactory receptor cell is stimulated ,an inpulse travels along the olfactory nerve to the limbic portion of the brain where memory,hunger,response or emotion is evoked.before consciously  knowing we are in contact with an aroma,our subconscious  mind has alreday received and reacted to it.