Tar:Thaum cov pa luam yeeb tau nqus mus rau hauv tib neeg lub cev, ntau dua 75% ntawm cov tar yuav ua rau cov mucosa ntawm lub trachea thiab alveoli, ua rau cilia ntawm trachea thiab bronchus mucosa tsis tuaj yeem ua haujlwm li qub. Nyob rau hauv lub sij hawm ntev, yog hais tias lub tracheobronchial mucosa yog stimulated los ntawm o rau lub sij hawm ntev, nws yuav tshwm sim Squamous metaplasia ua rau muaj kev pheej hmoo ntawm kev hloov mus rau hauv mob qog noj ntshav.
Gas:Cov pa luam yeeb muaj benzene, formaldehyde, hydrazine, N-nitrosodimethylamine thiab lwm yam carcinogens. Ntawm lawv, benzene yog cov carcinogen siab heev thiab tuaj yeem ua rau muaj mob qog noj ntshav, mob qog nqaij hlav, mob ntsws cancer thiab lwm yam mob qog noj ntshav. Tsis tas li ntawd, muaj cov pa phem xws li carbon monoxide thiab nitrogen dioxide hauv cov pa, uas tuaj yeem ua rau puas tsuaj rau cov hlab plawv, cerebrovascular thiab ua pa thiab ua rau muaj kab mob ntev xws li myocardial infarction.
Cov tshuaj radioactive:Nrog rau cov pa luam yeeb, cov isotopes radioactive nkag mus rau tib neeg lub cev: polonium 210 thiab lead 210. Txawm hais tias lawv cov ntsiab lus hauv cov luam yeeb yog me me, tom qab hlawv, polonium 210 thiab lead 210 tau txuas rau alveoli nrog rau cov khoom me me hauv cov pa luam yeeb, thiab yog tsis tu ncua radiated thiab decayed nyob rau hauv tib neeg lub cev. Txhua zaus koj haus luam yeeb, lawv tau khaws cia, ua rau muaj mob qog noj ntshav ntxiv.