I don't know where you got your information from, but Omicron doesn't change any of the physics of virus particle spreading. Mask are absolutely working. Even

I don't know where you got your information from, but Omicron doesn't change any of the physics of virus particle spreading. Mask are absolutely working. Even cloth masks. But of course when we are talking masking nowadays we mean N95 for everyone which provides roughly a 25x reduce risk of contracting covid if both source and target are wearing it.