Toi,
I understand your feeling, but would you imagine similar jokes to “you retzuyos are not kosher” – “burn it”?
mask is a “mitzva of the year”. You don’t get repulsed by a need to not eat on Yok Kippur, or a need to buy a $100 fruit in the fall. I feel it very strange that people are repulsed by whatever Hashem wants us to do today. Just because it is different from what was required yesterday?
Maybe this _is_ the idea of Pesach? Imagine how CR would erupt if they were told to buy a sheet, shecht it in their house and then put the BLOOD in the placa of heilike mezuzahs?! We would have to run out of town with outstreached hands and jump into the Yam Suf running away from people’s anger!
So for new minhagim
– use old masks to make a fire for matzah baking
– number them and use them to count omer. You can actually use them for measuring omer by volume!
– use old stinky masks to ensure compliance with SD!
– use them as kippot
– (seriously) do not WASH masks, air dry them not to destroy filtering material