Tobacco smoking is hazardous for health. However. not all forms of tobacco use entail the same risks and the latter should be studied and compared in a sound realistic way. Smoking machines for cigarettes (which are consumed in a few minutes) were early designed as a tool to evaluate the actual intake of toxic substances (‘toxicants’) by smokers. https://www.bekindtopets.com/hot-mega-Swish-Supreme-Glide-Track-White-great-pick/