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According to a new study published in journal SN Applied Sciences, burning of mosquito coils and cigarettes in closed places releases traces of heavy metals and particulate matter in the environment which may cause adverse health impacts following prolonged exposure.
Cigarettes and mosquito coils along with highly polluting cooking fuel use, and gases released from burning of wood-containing products are major sources of indoor air pollution. According to the World Health Organization (WHO), household pollution is responsible for 4.3 million deaths annually in the world.
The study had found that maximum concentration of various sizes of particulate matter (PM0.25, PM1, PM2.5, and PM10) was released during the burning phase as compared to pre- and post-burning phases of cigarettes and mosquito coils. Aluminium, chromium and tin were higher in mosquito coil smoke, while copper, zinc, manganese, nickel and lead were higher in cigarette smoke samples.
Particulate Matter (PM) is small liquid droplets and solid particles whose hazardous nature increases with a decrease in their size as they become respirable. It includes both organic and inorganic particles, such as dust, pollen, soot, smoke, and liquid droplets.

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