Even though our train "smoke" is a vapor, and not true smoke, it is mostly a suspension of lipid particles (mineral oil) in a vapor and any solvents, such as petroleum distillates, used to formulate the product, also vaporize as well. Inhaling strong concentrations of such vapor in an unventilated room over a period of time could have some deleterious effects on the lungs, especially on seniors with COPD, emphysema or other forms of pulmonary insufficiency. Might be something to consider!
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