If memory serves Sister Melody is the only NPC who doesn't have some kind of scent in her description. As a half-angel it could be she doesn't really have one to speak of. Bianca and Gianna wear hippie forest berry fragrances that might be offensive to a hypersensitive olfaction, and Pris wears just a little milk of roses. Ishi is loam, green leaf volatiles, and an aired glass of wine.