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But, through research in Southampton laboratories, the firm is also attempting to refine processing techniques such that levels of nicotine and, in particular, tar in cigarette smoke are reduced.
BBC: BAT targets 'low-risk' cigarettes
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Components of tobacco smoke such as carbon monoxide, nicotine, benzene and small particles can easily be measured in the air of a smoker's home or workplace.
CNN: Is secondhand smoke really that risky?
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The product, in various forms, essentially supplies the drug smokers crave nicotine without the toxic, deadly smoke.
FORBES: The EU's New Tobacco Directive: Protecting Cigarette Markets, Killing Smokers