![]() ![]() If too little outdoor air enters a home, pollutants can accumulate to levels that can pose health and comfort problems. High pollutant concentrations can remain in the air for long periods after some of these activities. These include smoking, the use of unvented or malfunctioning stoves, furnaces, or space heaters, the use of solvents in cleaning and hobby activities, the use of paint strippers in redecorating activities and the use of cleaning products and pesticides in housekeeping. Other sources, related to activities carried out in the home, release pollutants intermittently. Some sources, such as building materials, furnishings and household products like air fresheners, release pollutants more or less continuously. For example, an improperly adjusted gas stove can emit significantly more carbon monoxide than one that is properly adjusted. In some cases, factors such as how old the source is and whether it is properly maintained are significant. The relative importance of any single source depends on how much of a given pollutant it emits and how hazardous those emissions are. outdoor sources such as radon, pesticides and outdoor air pollution. ![]()
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