The medication causes a moderate increase in the level of dopamine, thus activating the pleasure pathway (like nicotine) and blunting the cravings and withdrawal symptoms
[12] The incidence of peritoneal mesothelioma is 0.53.0 per million per year in men, and 0.22.0 per million per year in women
They want to taste their strain, not cover it up
The rising smoke from the pipe adds a sense of movement and atmosphere, contrasting with the otherwise still and contemplative pose of the sitter
The HEPA filters in these units are typically capable of trapping particles much smaller than half a micron in diameter, which makes them effective at reducing exposure to many allergens like pet dander, mold spores, pollen and dust, as well as some bacterial and viral microorganisms
Further Reading In a milestone, FDA proposes ban on menthol cigarettes and flavored cigars (Washington Post) Biden Administration to Advance Ban on Menthol Cigarettes (Wall Street Journal)