Supergooddeals via Ebay offers 10x KN95 Respiratory Protective Mask/Respirator w/Adjust Nose ComfortBar Folding for $9.95 with free shipping.

Product Description:
-earloops made with thin stretchy polyurethane (sponge-like) material.
-great for allergy season:  blocks pollen, dust, smog, pollution, smoke, etc.
-soft and comfortable:  form fitting on most faces and suitable for wearing all the time.
-great for indoors and outdoors.
-suitable for traveling, hospital visits, being outdoors.