Lai Gi-ming points out that like the second-hand smoke thoughtfully "filtered" for others by the nicotine addict, cooking-oil smoke and soot are also relatively small-molecule carcinogens that easily travel to the extremities of the bronchi and lead to cancer.
賴基銘指出，與經由癮君子自己「過濾」一次的二手煙一樣，煮食時的油煙、煤煙等，也都是分子較小的致癌物質，較容易直達支氣管的末端，導致肺腺癌。