The intoxicating smells of lavender, eucalyptus, jasmine, and rosemary may be just what you need to overcome a stressful day and ease your mind. Essential oils can be inhaled or applied to the skin through lotions, bath salts, or massage oil. They work by stimulating smell receptors in the nose and sending messages to the limbic system, eliciting an emotion. Aromatherapy can have a relaxing effect, relieve pain, and improve one’s quality of life.