Clove Oil is an essential oil that's derived from clove trees. Clove oil, which ranges in color from colorless to light yellow and has a strong, spicy aroma, has been used for centuries in a variety of applications. The health benefits of clove oil may include relief from a toothache, indigestion, cough, asthma, headache, and some symptoms of stress. The benefits can be attributed to its possible anesthetic, antimicrobial, antifungal, antiseptic, antiviral, aphrodisiac, and stimulating properties.