Air quality affects all living organisms in diverse ways. Airborne pathogenic microbes are associated with many infectious diseases such as tuberculosis, severe acute respiratory syndrome (SARS), avian flu, anthrax, and SARS-CoV-2. In particular, the COVID-19 pandemic has demonstrated the real need for mechanisms to control the spread of airborne respiratory pathogens. Thus, preventing the spread of disease from pathogens has come to the forefront of the public consciousness. And this has brought an increasing demand for novel technologies to prioritise clean air by both big and small players.