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Secondhand smoke is tobacco smoke which affects people other than the 'active' smoker. It is made up of the exhaled smoke (15%) and mostly of smoke coming from the burning end of the cigarette, known as sidestream smoke (85%). [30] Secondhand smoke contains more than 7000 chemicals, of which hundreds are harmful to health. [30]
The study concluded that homes were a greater source of exposure to second-hand smoke than workplaces, which led the tobacco industry to use its conclusions to argue that workplace smoking restrictions were unnecessary. [22] This study has been criticized for suffering from "serious biases" that led to low values of exposure being reported. [22]
The AHAM-certified seal lists a rating for tobacco smoke, pollen, and dust removal, and a rating for room size. The clean air delivery rate (CADR) is a figure of merit that is the cubic feet per minute (CFM) of air that has had all the particles of a given size distribution removed.
Passive smoking is the inhalation of tobacco smoke, called passive smoke, secondhand smoke (SHS) or environmental tobacco smoke (ETS), by individuals other than the active smoker. It occurs when tobacco smoke diffuses into the surrounding atmosphere as an aerosol pollutant , which leads to its inhalation by nearby bystanders within the same ...
Studies have shown that pollution levels for smoking areas indoors are higher than levels found on busy roadways, in closed motor garages, and during fire storms. [clarification needed] Furthermore, smoke can spread from one room to another, even if doors to the smoking area are closed. [137]
An increase in wildfire smoke over the last decade — spurred by a warming climate — is undoing years of progress on air quality in the U.S., according to a new environmental science study ...
Minnesota passed the Freedom to Breathe Act on May 16, 2007. This act was passed with the intent of protecting the public from health hazards of secondhand smoke by banning smoking in public indoor areas not covered by the 1975 law. An indoor area is defined as the space between a floor and a ceiling that is bounded by walls covering more than ...
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