Some elements of smoke are attribute from the combustion supply. Guaiacol and its derivatives are products and solutions of pyrolysis of lignin and so are attribute of Wooden smoke; other markers are syringol and derivates, and other methoxy phenols. Retene, an item of pyrolysis of conifer trees, is an https://broadfar.com/oraco-pioneering-a-smokeless-future-with-innovative-nicotine-delivery/