十种物质有致癌功能一、吸烟：香烟中致癌物质最多，其中包括有毒的氰化氢、一氧化碳和二氧化氮碳气体及４８种有毒混合物。香烟中的大多数化学气体都淤积在口腔、鼻腔、咽喉与肺部，使其蒙上一层焦油，正是在这层焦油中，隐藏着烟叶中的大多数致癌物，所以过量吸烟易致癌... Ten substances have carcinogenic function One, smoking: Most carcinogens in cigarettes, including toxic hydrogen cyanide, carbon monoxide and carbon dioxide gas and 48 kinds of toxic mixture of carbon dioxide. Most of the chemical gases in cigarettes are deposited in the mouth, nose, throat and lungs, so that it is covered with a layer of tar, it is in this layer of tar, most of the tobacco hidden in carcinogens, so excessive smoking can cause cancer ...