With fewer and fewer people wearing face masks on commercial airplane flights, is the Covid-19 coronavirus now in plane sight, so to speak? Well, the National Public Health Laboratory (MLAK) in Malaysia has now reported a finding that may make you want to face mask what’s happening. Wastewater samples from 28 of 29 flights in Kuala Lumpur, Malaysia, collected from June to December 31 of last year contained—guess what—the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). That’s according to an article in the Malaysian newspaper Sinar Harian.