Respuesta :
Secondhand smoke is described as "the combination of smoke exhaled by the smoker and smoke emitted from the burning end of a cigarette or other tobacco products" (World Health Organization 2007). So, unintentional inhalation of smoke that occurs close to smokers or in enclosed spaces where tobacco has recently been used constitutes secondhand smoke exposure.
- Thirdhand smoke is a complicated phenomenon brought on by lingering tobacco smoke particles that stick to smokers' clothes and hair as well as to surfaces, furniture, and dust in enclosed spaces.
- These toxins continue to exist long after the odor of secondhand smoke has subsided.
- They either reemit into the gas phase or combine with oxidants or other substances in the environment to create secondary pollutants, some of which are hazardous to human health or carcinogenic (Matt et al. 2011).
- Thirdhand smoke exposure is thus defined as the inadvertent intake of tobacco smoke and other related substances that takes place in the absence of concurrent smoking and happens mostly by breathing, but also through ingestion and cutaneous routes.
- Through close contact with smokers and in settings where tobacco is frequently smoked indoors, exposure can occur even years after a person stops smoking.
- For studies analyzing passive smoking exposure in indoor settings, particularly in home settings, this terminology issue is of particular relevance.
- Since many nations have banned smoking in enclosed public spaces, residential settings have changed from being the primary sources of passive smoking exposure (World Health Organization 2007).
- When determining the extent of pollutant intake as a result of passive smoking exposure, we think researchers should take into account the separate contributions of secondhand and thirdhand smoke.
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