Individuals with normal lungs and even many individuals with underlying chronic lung disease should be able to wear a non-N95 facial covering without affecting their oxygen or carbon dioxide levels.
From the Atlantic
Never getting the pandemic under control means never unleashing the economy. Just look at the casinos in Las Vegas: open, yet half-empty. The botched response means millions of parents will need to continue watching their young children instead of committing to work. It means thousands of offices will remain on work-from-home orders, hurting the commercial operations built to support them. It means Americans will avoid doctors’ offices, bars, and sporting events, staying at home and starving local businesses of revenue. It means localities might end up having to return to extreme social-distancing measures over the summer and fall. And it means fear and mistrust: depressed consumer confidence, ruined faith in government, and concerns about the economy’s ability to recover.