<p>The prolonged use of medical masks can be uncomfortable. However, it does not lead to CO2 intoxication nor oxygen deficiency. While wearing a medical mask, make sure it fits properly and that it is tight enough to allow you to breathe normally. Do not re-use a disposable mask and always change it as soon as it gets damp.
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<ul><li>Medical masks (also known as surgical masks) are flat or pleated; they are affixed to the head with straps or have ear loops.</li></ul>
Originally published on the World Health Organization, Emergency, Coronavirus disease (COVID-19) pandemic site under the Mythbusters section.
World Health Organization
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