Zomwe Zimayambitsa Khansa Yoyamba ndi Malasha Tar

3,4-Benzopyrene yomwe ilipo mu phula la malasha imadziwika kuti ndi khansa yayikulu.

Izi ndizofala m'malo osiyanasiyana, kuphatikizapo utsi wochokera m’mafakitale, utsi wa ndudu, utsi wagalimoto, komanso mu nyama zosuta zomwe zimatulutsidwa panthawi yometa.