@connellryan1 @DrLeanaWen 3mm is a HUGE gap. That basically requires wearing them wrong (e.g. not bending nose clip). Which happens of course, but IME is actually much LESS likely with a KN95 or KF94 than surgical due to the fitted shape.
@connellryan1@DrLeanaWen 3mm是一个巨大的缺口。这基本上要求佩戴错误（例如，不要弯曲鼻夹）。当然会发生这种情况，但由于形状合适，KN95或KF94的IME实际上比外科手术的可能性小得多。