It depends how long the virus is 'alive'. If it gets all over your mask but then gets destroyed and cannot be revived then you don't need to dispose of the mask as a bio-hazard.

I have no idea. Just like anyone in this CCP virus scam, I can suggest any nonsense that comes to mind, provide no evidence, and hope that there is no actual current evidence out there to contradict me. Of course, if that evidence is effective then I can call upon the new strains to invalidate all predictions.

Will you survive? Will I? Will your grandmother? The simple solution is to lock yourself inside for the rest of your life, however long it may be.