I think you and others are making a lot of assumptions here - outside a hospital setting with trained staff and fitted masks to keep out virus-saturated air oth

I think you and others are making a lot of assumptions here - outside a hospital setting with trained staff and fitted masks to keep out virus-saturated air other vectors may be far more important. There are reasons health experts around the world have not bothered to recommend general wearing of masks before other measures. Most people don't have the discipline to wear masks properly, not touch them, sterilise them, clean masks and all their clothes when they get in etc.