Cassandra Clare said this quote

I don't have a reason to lie to you. Not now.' Jace's gaze remained steady. 'And quit baring your fangs at me. It's making me nervous.''Good,' Simon said. 'If you want to know why it's because you smell like blood.''It's my cologne. Eau de Recent Injury.' Jace raised his left hand. It was a glove of white bandages, stained across the knucles where blood had seeped through.