Indoor fireplaces may release tiny particles that can cause health complications when inhaled, according to research from Stellenbosch University’s Faculty of Engineering. The study found that the the harmful substances emitted by indoor fireplaces exceeded the guidelines established by the World Health Organisation. Longterm exposure to these particles can lead to premature deaths and arrested lung function in children. The research suggests further study is needed, including interventionist experiments that provide indoor air quality monitoring data to households to encourage changes in behaviour and indoor environmental practices.