61.   While traveling, avoid tobacco smoke and pungent food smells.

62.   Working alone and in collaboration with others, he provided chemical proof of the carcinogenic potential of tobacco smoke and tobacco itself.

63.   Wynder himself was credited with furnishing biological proof that tobacco smoke contained a cancer-producing substance.

64.   Pending lawsuits accuse the industry of manipulating nicotine levels and demand that it pay the health bills of patients afflicted by diseases blamed on tobacco smoke.

65.   But it can be brought on or made worse by pollution, tobacco smoke, colds, cold temperatures, exercise, excitement or stress.

66.   But if you look out of your window you can see that the atmosphere is heavily polluted by something much more lethal than any tobacco smoke.

67.   Concentrated tobacco smoke localised in the palatal vault area can cause irritation and produce heat.

68.   Hecht said that tobacco smoke in homes with central heating and air conditioning systems tends to spread throughout a house.

69.   If tobacco smoke is so bad, the government should ban it, she said.

70.   In addition, tobacco smoke increases both the period prevalence and the severity of the childhood respiratory conditions.