Some factors of smoke are characteristic from the combustion resource. Guaiacol and its derivatives are goods of pyrolysis of lignin and therefore are attribute of wood smoke; other markers are syringol and derivates, as well as other methoxy phenols. Retene, a product of pyrolysis of conifer trees, is definitely https://broadfar.com/oraco-pioneering-a-smokeless-future-with-innovative-nicotine-delivery/