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Lungs and airways: Irritates and inflames the airways, worsening asthma and chronic lung disease

But every now and then we like to try something new

The ones affected indirectly are more mysterious, pointing out that we really dont know the mechanism by which smoking causes tumors in these tissues. Scientists did notice that tobacco increases risk of cancer in organs that are involved in metabolism and waste filtration, such as the liver, bladder, kidneys, and stomach

The prop department even kept count because Murphy himself was curious about the total

1 2 3 "Regulation on Picture and Text Warnings on Tobacco and Measurements of the Maximum Harmful Tobacco Substances" (PDF)