CO2 AND CO
Carbon dioxide and carbon monoxide are two compound molecules created from the process of combustion, often emitted from nearby cars, machinery or burning of wood. These compound molecules are problematic, as they can cause dizziness, fatigue or even trouble breathing.
Volatile organic compounds can be emitted from chemical off-gassing from things such as varnishes, cleaning chemicals, carpets, air fresheners, cosmetics, vinyl flooring etc.
High levels of moisture in building materials or items, as well as high humidity in the air can help contribute to the growth of mould. Whilst there is always mould in the air (normal mould ecology levels), higher amounts of moisture combined with a food source can encourage unsafe mould ecology levels.