Check whether your N95 respirator has been tested and certified by the U.S. National Institute for Occupational Safety and Health (NIOSH), which provides tips on how to identify legitimate and counterfeit products on its website , or whether it is on the list of counterfeit respirators found below. If your respirator is counterfeit, stop using it as it may not protect you against the virus that causes COVID-19. Report any health product adverse events or complaints to Health Canada. Provincial and territorial health authorities and healthcare institutions should review their inventories of respirators to confirm that they meet the Government of Canada technical specifications for healthcare settings for the COVID-19 response .