Our health is linked to the quality of the air we breathe. According to the World Health Organization, ambient and household air pollution is associated with 7 million premature deaths every year. And it is a growing problem. Whether it is longer pollen seasons, airborne pathogens such as SARS-CoV-2, the virus that causes COVID-19, urban air pollution or mould-infestations, there are a wide range of factors that have a negative impact on air quality....