Homam, also called as havan is a ritual is performed by the Hindu.
There are different types of Homams performed by people under the guidance of the best poojari in Varanasi.
The most commonly used ingredients used are as follows: dried cow dung patties, dried coconut, milk, curd, wood shavings, peepal twigs (samit), camphor, and ghee.
Many reports and researches indicate that burning of plants and herbs releases nitrogen, carbon dioxide, carbon monoxide, methane, oxygen, and argon (~75%), and other hydrocarbons (~20%), and other particulates (~5%).
These particulates are composed of organic acids, sterols, terpenoids, phenols, alcohols, carbonyls, alkaloids, and sugar derivatives.
At high temperatures, metals such as arsenic, nickel, cobalt, and lead are also seen.