Environmental Tobacco Pollution (ETS) is the pollution generated by the burning of tobacco products indoors, which has become a major public health problem. In this research, in addition to the histopathological results, it was observed that the exposure time of Environmental Tobacco Pollution not only affects the respiratory system, but also involves other systems and the metabolism of individuals in contact with it. It is intrinsic to the biologist to be concerned about the environment and living beings, so this professional is also responsible for studying, discussing and acting to demonstrate the damage caused by this pollution, as was done in this research, by carrying out demonstrative experiments. It is therefore important to emphasise the need for research and discussions involving PTA, with the aim of providing additional information about it.
