![]() ![]() 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.
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