Store to Purchase a Mask to Prevent Transmission of the Coronavirus

There's probably none.

But you can make a mask with a bandanna and 2 hair ties or rubber bands (rubber hair ties are probably a bit better for the skin on the back of your ears, plus they're less likely to snap).

You can get both rubber hair ties and bandannas at Amazon; they still seem to be in stock. Hair ties (Goody brand is cheap) run about $4.50 for way more than you need, and a stack of 8 bandannas for $13. Hair ties are probably also available at CVS. Having extras of both is a good idea (just in case anything snaps, plus you can machine wash all of this so you'll have if your stuff is in the wash).