Does your character have blood?: Yes!
Would their blood smell better or worse based on that Affinity: Worse, she's more hopeful and excited now than she's ever been.
Any other notable facts about their blood: Right now, it's not an issue, but later on, her blood will store a bunch of solar energy, and if the comics are anything to go by, that has a good chance of burning a vampire up on the spot. So, uh, there's that.