I called Main Street Supply a few weeks ago where I got my Imogen3 to ask about the capability of the machine to filter the COVID 19 virus. He said he was not aware of any research on the internal filter to filter viruses. Since it is basically sucking up the sir around you & sending it directly to the respiratory system, I have no confidence it can filter COVID. When I have to into somewhere I resort to my old tank & cart. It’s cumbersome but I feel safer than with my portable. Maybe someone can clarify this.
CH