Analysis from Dr. Philip Tierno Jr., NYU Langone Medical Center :

"All coronaviruses attach to ACE-2 receptors on human cells by their Protein S spikes on their surface and that is also the main target of the ions. Hence all coronaviruses (including COVID-19) would be affected by the air ions in the same way and be inactivated and destroyed. It doesn’t matter what the strain of coronaviruses is, they all succumb by the same mechanism."