| Resumo: | Firefighting occupational exposure is classified as possible carcinogen to humans by the International Agency for Research on Cancer and the US National Institute for Occupational Safety and Health [1,2]. Full monitoring of firefighters’ exposure to PAHs via all exposure routes should be performed through the quantification of their internal dose. The consumption of tobacco is responsible for the exposure to many smoke components including more than sixty known carcinogens, including polycyclic aromatic hydrocarbons (PAHs) [3]. PAHs are ubiquitous compounds formed during pyrolysis or incomplete combustion of organic matter, being well known for their toxic, mutagenic, and carcinogenic properties to humans [4,5]. So far, the impact of tobacco smoke on firefighters’ total exposure to PAHs is very limited.
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