Havan or Yagya is a ritual of purification in Indian tradition or Hinduism . The process of worshiping God through fire in a kund is called Yagya . Havi, Havya or Havishya are those substances which are offered to the fire (which are put in the fire). After lighting the fire in the Havan Kund , fruits , honey , ghee , wood are poured into this holy fire.The sacrifice of other things is important. To reduce air pollution, learned people in India used to perform yagya and then there were no diseases in our country. Havan is also performed for good luck, health and prosperity etc. Agni magnifies the properties of any substance manifold. Just like if a chili is put in the fire, then the effect of that chili increases and hurts many people, similarly the fire

Different types of atmosphere are present in the sky in each season. Cold, heat, moisture, heaviness of air, lightness, full of dust, smoke, snow etc. The sequence of origin, growth and elimination of different types of germs goes on. That’s why sometimes the atmosphere is healthy. Sometimes it becomes unhealthy. To remove such distortions and to create a favorable environment, such medicines are used in Havan, which can fulfill this purpose well.