Initially that was the reasoning, but I also believe that Fauci was just being truthful. They'll block smaller droplets, but unless you have a properly fitted KN95 mask and you're only wearing it for a short amount of time, you're essentially participating in medical theater.
Initially that was the reasoning, but I also believe that Fauci was just being truthful. They'll block smaller droplets, but unless you have a properly fitted KN95 mask and you're only wearing it for a short amount of time, you're essentially participating in medical theater.