“…Furthermore, increasing numbers of people, including scientists, are becoming involved in an animated debate about how SARS-CoV-2 is transmitted in the open air via particle pollution (atmospheric PM). The number of studies concerning particle pollution (or atmospheric PM (PM10 or PM2.5)) as a carrier of SARS-CoV-2 is growing rapidly ( Setti et al, 2020a -e; Coccia, 2020a , b ; Anand et al, 2021a ; Al Huraimel et al, 2021; Barakat et al, 2020 ; Belosi et al, 2021 ; Bontempi, 2020a , b ; Bontempi et al, 2020 ; Borak, 2020 ; Comunian et al, 2020 ; Domingo and Rovira, 2020 ; Kayalar et al, 2021 ; Milton, 2020 ; Sanità di Toppi et al, 2020 ; Tang et al, 2020 ; The Guardian, 2020 ; Wang et al, 2020a ; Chirumbolo, 2021 ; Kumar et al, 2021 ; Maleki et al, 2021 ; Martelletti and Martelletti, 2020 ; Mehmood et al, 2021 ; Mukherjee et al, 2021 ; Nor et al, 2021 ; Pivato et al, 2021 ; Shao et al, 2021 ; Tung et al, 2021 ).…”