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how does cigarette smoke cause lung cancer The harmful chemicals in smoking directly damage cells, causing DNA mutations that increase risk. Over time, these damaged cells grow abnormally, leading to tumor formation in the lungs. Quitting smoking Lung
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The night shift person had a serious attitude problem

A fire in the basement may go undetected by a CO-only unit until smoke fills the upper floors

Weve long known cigarette butts are an issuebut now weve been able to quantify the amount of nicotine they emit. Temperature also plays a role, he said
During my younger days I use that for only one purpose - just as it says on the tin
