[9] Bartolom de las Casas described how the first scouts sent by Christopher Columbus into the interior of Cuba found: men with half-burned wood in their hands and certain herbs to take their smokes, which are some dry herbs put in a certain leaf, also dry, like those the boys make on the day of the Passover of the Holy Ghost
Fumigation and fire offerings have been performed with various substances, including clarified butter (ghee), fish offal, dried snakeskins, and various pastes molded around incense sticks and lit to spread the smoke over wide areas
Tobacco also is grown for its ornamental appearance and herbal properties
Logically, levels of nicotine would be higher in the leaves and stems of a plant than in the fruits/food that we & animals are more interested in eating
Caffeine pouches fall entirely outside this framework because they contain zero nicotine and zero tobacco