 NovaBay Pharmaceuticals, Inc. NYSE American: NBY announces the availability of KN95 disposable air filter masks on the Companys website Avenova.com. The masks are being sold at a price of 59.99 for a package containing 10 masks or 149.99 for a package containing 30 masks. KN95-rated masks are effective at filtering out at least 95 of airborne particles, including microorganisms, dust, pollen and air pollution. 