Im not blind so i dont know exactly but ... dont blind people have better hearing and smelling? Wouldnt a blind guy say "i smell blood. Did you get hurt?" after being pushed to the bloody corpse? I mean ... he even said he smells it so ... why ignore it?
I would guess that MC doesn't want seme to suspect that MC is suspicious (since saying "I smell blood?" could make him out to be a witness), or else he might killed in order to be silenced
anddddf when he said I'm sorry I can't drink when he saw the killer's D covered in wine... the uke slipped too many times so i guess the killer already knows that he can see,
i know im repeating myself but ... he is no dog ... he is a cat ... obviously