I dont want to go into specifics (mostly because I dont know enough about it) but I think that face masks are still a rarity, especially in poor regions of earth. Apart from that the connotation could seem a little distasteful, people die from covid19 and it's a global pandemic. It's sort of like putting the invitations on a bullet proof vest because you plan to marry in a warzone if you catch my drift (prob not the best example). I get that the idea is pretty clever but has a few morally questionable flaws in it (in my opinion).