Which of the following can be a source of indoor air quality contaminants?

The recognition that all listed options can contribute to indoor air quality contaminants is crucial for understanding the sources of indoor pollutants. New furniture and building materials often release volatile organic compounds (VOCs) as they off-gas, which can lead to poor indoor air quality and health issues over time. Cleaning fluids commonly contain various chemical substances that can also emit VOCs and other irritants, thereby degrading air quality when used frequently in enclosed spaces.

Outdoor air, while typically considered a source of fresh air, can introduce pollutants from external sources like vehicle emissions, pollen, and airborne particulates into indoor environments, especially if ventilation systems are not properly managed. Together, these elements highlight the multifaceted nature of indoor air quality issues and underline the importance of monitoring and addressing all potential sources of contaminants to maintain a healthy indoor environment.

Recognizing the cumulative impact of all these sources emphasizes the need for comprehensive strategies in occupational hygiene to control and mitigate indoor air quality risks.