Vaporization is an alternative to smoking. It doesn't make smoke or other cancer-causing by-products. It does that by heating the material so that the active compounds boil into a vapor. Nothing actually burns, so there is no smoke or taste of smoke. Vapor ideally contains almost no particulate matter or tar, and much less noxious gas such as carbon monoxide. The vapor can be collected in a jar or inflatable bag, or inhaled directly.