Does your face mask have vents or valves?The Centers for Disease Control and Prevention (CDC) recently updated its guidelines advising Americans to avoid such face masks, as they aren’t as effective in preventing the spread of COVID-19.“The purpose of masks is to keep respiratory droplets from reaching others to aid with source control. Masks with one-way valves or vents allow exhaled air to be expelled out through holes in the material. This can allow exhaled respiratory droplets to reach others and potentially spread the COVID-19 virus,” the federal agency states in its guidance. “Therefore, CDC does not recommend using masks if they have an exhalation valve or vent.”

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