Eucalyptus essential oil has a strong, stimulating camphor scent. As a natural decongestant, its strong scent opens the sinuses and clears congestion. It is antibacterial, an expectorant and cough suppressant, and helpful in fighting colds, coughs and other respiratory conditions. It can help to relieve joint pain and muscular aches. It fights fungal infections such as athlete's foot, facial Candida and fungal infections of the fingernails. Avoid using during pregnancy.