I'm concerned about indoor air quality. Can you provide a summary of common indoor air contaminants discussed on this website? For each contaminant, describe its typical sources and at least one potential health effect, based on the information provided on the site.
Navigate to the 'Topics' section. Locate and click on the 'Volatile Organic Compounds' topic. Identify sources and health effects for VOCs and Formaldehyde from the 'Introduction to VOCs' and 'VOCs and Sensory Irritation Symptoms' sections. Return to the 'Topics' page. Locate and click on the 'Airborne Infections' topic. Identify aerosols as carriers of pathogens, their implied source, and associated health effects from this page. Synthesize the identified information for VOCs, Formaldehyde, and Aerosols.
Identify 'Volatile Organic Compounds (VOCs)' as a contaminant, state sources (e.g., building materials, furnishings, consumer products, tobacco smoking, indoor chemical reactions, outdoor air, people and their activities), and mention health effects (e.g., eye, nose, throat, or skin irritation). Identify 'Formaldehyde' as a contaminant (specifically as a common VOC), state sources (similar to general VOCs), and mention health effects (e.g., eye, nose, throat, or skin irritation). Identify 'Aerosols' as a contaminant (specifically as carriers of pathogens), state their implied source (transmission of respiratory infections), and mention health effects (e.g., respiratory infections). All provided information for sources and health effects must be consistent with the content found on the website.