Email from Julia Preseau: "The word 'masklessness' — going to surge?"
She sent a couple of examples:
[link] So it was that until this week, Mr. Trump’s mask aversion extended well beyond his person, echoing throughout the White House. Top aides generally eschewed them, as did those who attended meetings with the president or appeared at his daily public briefings. Certainly, Mr. Pence internalized the message, doing public appearances barefaced even after causing a minor scandal by declining to mask up during his visit to the Mayo Clinic last month, explicitly violating the hospital’s policy. Mr. Pence apologized for the infraction, before settling back into masklessness.
[link] And late in April, a woman whose previous brush with fame included an unsuccessful run for mayor of Roseville was arrested following an altercation at a Nino Salvaggio grocery store in St. Clair Shores, over, you guessed it, her masklessness.
No doubt there's a surge in all derived and inflected forms of the stem mask, including maskless and even unmasked as well as masklessness.