For people living and working in the city respiratory problems are as common as potholes. Recently New Delhi has overtaken Beijing as the most air-polluted city in the world. After a while it seems unaffordable to run to the doctors every time a cold catches hold of you. Ultimately we resort to home remedies. Among these steam inhalation continues to be the most effective against cold cough flu and irritable sinuses. Reinforce it with an essential oil for additional relief and therapeutic benefit. Steam inhalation is a method of introducing warm moist air into the lungs via the nose & throat