So someone mentioned Mako wearing the mask to bed to muffle his loud noises, and I just wanted to say what if he wears it because he built in a gag into some of his spares and he likes that.

that’s a v neat idea! tho I personally still think Mako and/or Roadhog would not be embarrassed about noises he might make. I see him more as uncomfortable with people seeing his face/facial expressions