In Italy, perhaps more than in many other places, smoking has interacted with the national culture - social, economic, political, and artistic - in profound and telling ways
Bonnie Springs at Hines Hospital, VA Medical Center, gave depressed and non-depressed subjects either nicotinized or denicotinized cigarettes after introducing a positive mood trigger and found that [s]elf-administering nicotine appears to improve depression-prone smokers emotional response to a pleasant stimulus. To investigate further, researchers at the University of Pittsburgh studied whether or not cigarettes improve emotional response to stressful triggers such as preparing for public speaking, dealing with a difficult computer task, and seeing negative images
Limited Production: Exclusivity always adds value
Other chemicals include things like lead, tin, nickel, arsenic, propylene glycol, ethylene glycol, and a host of flavorings