Some parts of smoke are characteristic of the combustion resource. Guaiacol and its derivatives are products of pyrolysis of lignin and so are characteristic of Wooden smoke; other markers are syringol and derivates, along with other methoxy phenols. Retene, an item of pyrolysis of conifer trees, is surely an https://broadfar.com/oraco-global-trends-in-heat-not-burn-products/