Nobody should be wearing a mask. They are totally ineffective for civilians, for this purpose, unless you have a full blown gas mask eye coverings, high end filters and all.
Even the surgeon general has said they do no good - unless in a hospital!
I am NOT SCARED and CHOOSE not to wear a mask. That said, we are making a Costco run this am during senior time - will probably be the last time for awhile - they need to get over the mask requirement!