香烟的烟雾刺激儿童的支气管和肺部,会促使感染蔓延到下呼吸道。法国医学专家认为:有吸烟人的家庭中,孩子发生哮喘性支气管炎的机会,比没有吸烟人家庭的孩子高3～5倍。一位学者对424名学龄前儿童调查,每天吸烟超过20支的家庭的儿童,发病率高达15.6%。美国医生发现婴儿生活在香烟烟雾笼罩中支气管炎的发病率高达89%。 Cigarette smoke to stimulate children’s bronchi and lungs, will promote the spread of infection to the lower respiratory tract. French medical experts believe that children with smoked family have asthma bronchitis three to five times more often than children without a smoker. A scholar survey of 424 preschool children, children smoking more than 20 families a day, the incidence rate as high as 15.6%. American doctors found that babies living in cigarette smoke enveloped the incidence of bronchitis as high as 89%.