tobacco carcinogens Today is World Cancer Day and use remains one of the leading preventable causes of cancer worldwide, responsible for around one in four cancer deaths. Cigarettes and other tobacco products contain Reduced Carcinogens – img8957
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About a third contained a related chemical that has been found to cause similar lung damage

I think the characters are doing it on purpose

The Food and Drug Administration (FDA) has liaison with other health specialist to caution consumers concerning the health risk associated with-cigarettes (Food Drug Admniistartion [FDA] 1)
Cleans away tobacco odour with a light and fresh Citrus fragrance
