HELPING THE OTHERS REALIZE THE ADVANTAGES OF SMOKING 

The visible particulate issue in this kind of smokes is mostly composed of carbon (soot). Other particulates could be composed of drops of condensed tar, or stable particles of ash. The existence of metals in the fuel yields particles of metallic oxides. Particles of inorganic salts could also be fashioned, e.g. ammonium sulfate, ammonium nitrate,