[Moderator Edit: I'm reopening this question by request from third parties because medical staff around the world are being forced to use masks such as these.]
How does a sanding mask compare with a disposable medical mask? I have some on hand. Would that be a reasonable thing to wear to protect myself and family members (corona virus)? Or would it give even less protection than a bandanna or a disposable medical mask?
Update: I'm asking about the range of particle and droplet size that the two types of mask keep in/out (according to specs, and disregarding particles that can enter around the edges).
I am not asking whether you think someone should or should not wear a mask.