No.

Federal health and safety authorities have not approved N95 or any other disposable face mask for protection against ozone.
Though some mask models like Moldex advertise a carbon layer insert to help filter “nuisance” level ozone, these have not been approved by federal authorities. 3M, a face mask manufacturer, found no definitive evidence the company’s disposable face masks protected against nuisance-level ozone during internal testing.
Surface-level ozone forms when two types of air pollutants, volatile organic compounds and nitrogen oxides, react with each other.
Colorado’s ozone levels are higher than normal this year, with the state’s nine-county ozone nonattainment area already seeing 51 days above the federal ozone limit as of Aug. 5. Last year, that area surpassed federal limits on 23 days.
Exposure to ground-level ozone can lead to respiratory issues like throat inflammation and difficulty breathing.
This Fact Brief is responsive to conversations such as this one.
The Colorado Sun partners with Gigafact to produce Fact Briefs — bite-sized fact checks of trending claims. Read our methodology to learn how we check claims.
Sources
- The Colorado Sun 9 Colorado counties keep soaring above federal ozone limits
- Environmental Protection Agency Health effects of Ozone
- Environmental Protection Agency What is Ozone?
- Centers for Disease Control and Prevention Email correspondence
- 3M Respiratory protection for Ozone
