On average in the UK, we spend 90% of our time indoors (homes, schools, workplaces, other public spaces and on transport). Indoor environments are more complex than outdoor environments, with pollutant levels that vary widely both between and within buildings.
Sources of indoor pollution in a home:
CO and NO₂ from fires and wood- burning stoves, VOCs and formaldehyde from carpets, paints, glues, furniture and air fresheners, tobacco smoke, pet dander.
What you can do:
- Avoid smoking indoors.
- Ventilate regularly – open windows or use extractor fans, especially when cooking or cleaning.
- Choose low-VOC (volatile organic compound) paints, cleaners, and air fresheners.
- Fix leaks and use a dehumidifier to prevent mould.
- Ensure boilers, stoves, and fireplaces are maintained and safe.
- Use indoor plants – some can help filter air naturally.