Recently, the coronavirus disease 2019 (COVID-19) outbreak has quickly spread globally and has shown significant impact on public health and economy (Chinazzi et al., 2020; Li et al., 2020; Rothe et al., 2020; Yan et al., 2020). Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the causative factor for the COVID-19 pandemic, can infect humans via several routes, such as inhalation of respiratory droplets or aerosols and contact with contaminated surfaces. Previous studies have indicated that SARS-CoV-2 can be detected in indoor as well as outdoor air. Preliminary evidence clearly proved that the virus could cluster with outdoor particulate matter (PM) under certain circumstances (Jiang et al., 2020; Setti et al., 2020). Particularly, it is suggested that SARS-CoV-2 may have the potential to spread through aerosols, which can be produced by speaking at a normal volume (Anfinrud et al., 2020). In addition, it is found that SARS-CoV-2 can stay for a considerably long time in the air. The aerodynamic characteristics and propagation of SARS-CoV-2 in aerosols have been reported (Liu et al., 2020). It was reported that SARS-CoV-2 was still found in the Diamond Princess cruise ship 17 days after people disembarked.