Some parts of smoke are attribute of your combustion source. Guaiacol and its derivatives are solutions of pyrolysis of lignin and therefore are characteristic 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/