Eucalyptus has a pleasant, mint-like smell with camphoraceous, woody, and citrusy notes. This oil is a perfect option to promote clear breathing because eucalyptus works as a natural decongestant and cough suppressant by helping your body break down mucus and phlegm. The cool, piney and invigorating aroma of eucalyptus supports natural mental clarity which may make you more alert and focused by stimulating the brain and improving energy. Eucalyptus oil may also promote relaxation as it contains menthol, which has a cooling effect that may help to relieve aches and tension, which can in turn promote relaxation and reduce feelings of anxiety.