I see your: "Learning about KN95s made all the difference"…
And raise you a cacophonous round—to the tune of Row Row Your Boat—of:
"No, no, no you don't
Havta mask anymore!
Happily, happily, happily, happily!
Covid's in the past!"
Sung loudly at folk wearing KN95s, N95s/FFP2s, FFP3s & elastometric respirators…
By random strangers and former friends all quite confident in certain unshakable knowledge that world of caring about one another's safety—let alone one's own—is rightfully behind us.