Does your character have blood?: Yes.
Would their blood smell better or worse based on that Affinity: Worse. Roji's still relatively new with adulting. He's driven, with quite a lot of energy.
Any other notable facts about their blood: Nothing particularly of note here. He's your average human who generally eats healthy home-cooked meals but is prone to indulging in sugar here and there. Hypothetical regained abilities down the line probably wouldn't affect that.