Eucalyptus Leaf also is known as Nilgiri in Hindi is world famous for its soothing aroma. Eucalyptus is primarily used as an expectorant to release mucus congestion. Eucalyptus benefits the respiratory system and is a great expectorant for those who are suffering from congestion, pneumonia, or the flu. You can enjoy the aroma by diffusing Eucalyptus into the air, or you may dilute it and apply it directly to the skin. Eucalyptus is cooling, stimulating and penetrating. Eucalyptus Leaf is also broadly antimicrobial, benefiting a wide variety of conditions, including those of the digestive and urinary tracts. They also recommended a steam inhalation of Eucalyptus vapors to help treat a whooping cough, bronchitis, asthma, and emphysema. Eucalyptus, which provides the spicy aroma, loosens mucus, making it easier to expel.