do cigarettes release carbon monoxide in The Science Behind CO Monitoring:

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Retail sales data are key to providing real-time information on the rapidly changing e-cigarette landscape, which is essential to reducing youth tobacco use. Retail sales data from Information Resources, Inc., which included Universal Product Code sales from brick-and-mortar retailers only, were analyzed by CDC, CDC Foundation, and Truth Initiative

Unlike cigarettes, cigars are meant to be enjoyed by drawing the smoke into your mouth, savoring the flavors, and exhaling

For those concerned about the relationship between different substances, understanding the interaction between nicotine and THC can provide additional context for managing hydration when using multiple substances