on chewing tobacco Smokeless is not better > Hurlburt Field > Display Chewing Tobacco and Bladder Cancer:

The blend is presented as a medium brown, fairly fine, cube cut, mixture

Although it appears smooth and non-absorbent, leather contains microscopic pores that trap cigarette smoke, tar, and nicotine

Lucy Popova, from the Center for Tobacco Control Research and Education at the University of California, San Francisco, said there is a lot of evidence about the harms of secondhand smoke on physical wellbeing

Chemosphere 169:467473 Tapia G, Gonzlez M, Burgos J, Vega MV, Mndez J, Inostroza L (2021) Early transcriptional responses in Solanum peruvianum and Solanum lycopersicum account for different acclimation processes during water scarcity events

But quitting is never easy: the average smoker tries more than a half-dozen times to quit before actually succeeding