The vast array of chemical constituents in tobacco smoke, including nicotine, nitrosamines, aromatic hydrocarbons, vinyl chloride, and cadmium, plays a central role in these pathological processes [4]
But these tests only check for nicotine exposure, not the method you use
Cornelius ME, Wang TW, Jamal A, Loretan CG, Neff LJ
drab dark brown ) on outer and inner surfaces Matte finish No brand elements (other than the brand name) No promotional colours, images, graphics, patterns or other marks Foils and inside lining in standardized colour and matte finish Tear strips (which enable wrappers to be opened quickly) in prescribed colour, location and dimensions Transparent glues or other adhesives to be used in packaging (not coloured)
Murray and Nadel's Textbook of Respiratory Medicine