They can get into the lungs and, just like in humans, they stay there
Combined, the two companies have serviced the tobacco industry for over 100 years
These things may be liquid when you dump them, but when they meet cool water or undergo various chemical reactions in the sewer system, they become very solid

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Tobacco companies have long had to manage shrinking sales of their main product category, but Altria executives said cigarettes have been increasingly squeezed by the introduction of unauthorized disposable electronic cigarettes, which are often cheaper and come in fruit and candy flavors