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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.
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 ...
A cleanroom or clean room is an engineered space that maintains a very low concentration of airborne particulates. It is well isolated, well controlled from contamination , and actively cleansed. Such rooms are commonly needed for scientific research and in industrial production for all nanoscale processes, such as semiconductor manufacturing.
The Global Burden of Disease study estimated the number of deaths in 2021 at 3.1 million, [12] and the death rate is highest in Africa. [13] In traditional cooking facilities, smoke is typically vented into the home rather than out through a chimney. Solid fuel smoke contains thousands of substances, many of which are hazardous to human health.
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 ...
Since the release of the initial 1989 study, titled A study of interior landscape plants for indoor air pollution abatement: An Interim Report, [6] further research has been done including a 1993 paper [7] and 1996 book [8] by B. C. Wolverton, the primary researcher on the original NASA study, that listed additional plants and focused on the removal of specific chemicals.
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