Yeah it's probably a mix of both angels' smell and her perfume I forgot the fleur de cirey bit at the start. Now I'm just imagining Jeanne dousing her in perfume before putting her in the casket.

I've always thought Luka was mistaking the angels' smell - rosemary - for Bayo's perfume. He says that line about the smell and his father's death after the angels appear and he accidentally walks up to them. Bayo even says right after that she doesn't use rosemary since it's a demon repellent.