It also has insect repellent properties (Jahn 1991 a, b; 1992), and is an active ingredient in some commercial mosquito repellents (Fradin & Day 2002) [4].Quite a number of alternative therapies espouse various inhalation or aromathrapy Eucalyptus oil benefits, including relief from sinus congestion, sinus infections, common cold, bronchitis, flu, and other respiratory diseases.