Scent and emotion are processed in similar brain structures located in the limbic system. The limbic system is apart of the brain thats responsible or processing emotion, memories and sense of smell. There is a gland in the limbic system called the Amygdala which plays a big role in storing and releasing emotional trauma.
A great way to stimulate this nerve and get it doing it’s thing is with our sense of smell. Meaning, oils can be a pretty powerful way to release and feel our emotions.