There are countless health benefits of ginger essential oil (Zingiber officinale), an oil steam distilled from the roots of the plant. Ginger oil smells like you'd expect: sweet, spicy, woody, and warm. The benefits for it are nearly identical to the benefits for fresh ginger.Essential oils are often called the "lifeblood" of the plant, and contain elements that have been known to have an immensely positive impact on the body's ability to heal itself. Using the essential oil of a plant creates a more potent affect of its properties. Ginger is well-known to have an effect on the digestive system, as well as the nervous system.