Helps in Rain
We use ghee in Hawan. After burning in fire, Ghee becomes subtle and with the support of air, it reaches high up into the clouds. Ghee condenses with lesser cooling compared to water vapour. Ghee when reaches to the cloud, it gets condensed first and also condenses the water vapour in contact which results in rain.
Generates oxygen in atmosphere
The diffused substances in the atmosphere cause photochemical reaction which results in generation of Oxygen.
CO2 + H2O + 112,000 cal. = HCHO = O2
Hawan produces the fragrant and germicidal gases. These gases are very effective to kill germs which are immune to other germicidal remedies. It remove odour from air because of its fragrant nature.