51.   There are bigger dangers than salmonella and secondhand tobacco smoke.

52.   They can detect tobacco smoke from two counties away.

53.   Tobacco smoke constricts blood vessels in mother and fetus, restricting the flow of blood.

54.   Tobacco smoke is another source of free radicals and a major reason for the increase in macular degeneration among Americans.

55.   Tobacco smoke mingled with the rich licorice scent of coal burning in the grate fireplaces, and it was delicious.

56.   Tobacco smoke is not prejudiced.

57.   Try starting a salad near someone who has just completed their meal and is finishing it off with great clouds of tobacco smoke. . . .

58.   Tobacco smoke damages the cells that line the tubes of the lungs, called the bronchi, switching on a cancer-causing gene that is normally repressed.

59.   Two years ago the FDA asserted that nicotine, the main addictive component of tobacco smoke, is a drug and that the agency therefore had jurisdiction over it.

60.   When a smoker inhales tobacco smoke, the nicotine is absorbed by oxygenated blood and sent to the heart, then the brain.