The delectable aroma of grapefruit has a pronounced impact on the senses and emotions. In aromatherapy applications, grapefruit is refreshing, cheering, slightly euphoria-inducing and slightly energizing. Grapefruit's sweet and familiar aroma can evoke warm feelings that melt sour dispositions. Grapefruit is a "releasing" oil -- so personalities that tend to harbor resentment or keep emotions bottled up can benefit from inhaling this oil.