Does your character have blood?: She's full of it
Would their blood smell better or worse based on that Affinity: She's actually going through something of an early life crisis as she is dreading graduating from college (because she has no ideas for careers) and is scared of adulting, which is why she is distracting herself with girls and adventuring so much at the moment. She is still gung-ho and optimistic in every other regard, so her blood probably smells okay. It's not exactly ennuis since she's driven to do things, but in attempt to avoid and distract herself from the things she should be doing.

Once she gets over those issues in a couple months it's going to smell terrible because she'll be positivity incarnate.

Any other notable facts about their blood: She has a tendency to faint so she may have naturally low blood pressure or mild anemia.