oregano is composed primarily of monoterpenoids, monoterpenes & polyphenol (phenol).

phenol is a complex matrix of organic acids that can interact with DNA.

plant based Polyphenol is already neutralized with potassium, making it safe.

but i am still trying to figure a way of making synthetic phenol using any plant material converted by fire into wood smoke, then reintroduced potassium hydroxide (Lye) from the fire ash.