1. While the odds of getting oral cancer from spit tobacco are about the same as from regular tobacco, a snuff user may be exposed to up to three times the level of nitrosamines as someone who smokes a pack of cigarettes a day.
尽管食口嚼烟导致患口腔癌的机会与吸烟导致患口腔癌的机会基本持平，但吸鼻烟者比起一天吸一盒烟的人来说，前者接触亚硝胺的程度是后者的三倍之多。
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2. Jack Krol, manager of a Louisville Minor League team and a user of both snuff and chewing tobacco, got cancer of his tongue in May1993.
路易斯维尔职业棒球小联盟比赛队的经理杰克•克罗尔既吸鼻烟也食口嚼烟，于1993年5月患舌癌。