The stagnant air was sticky, though as cold and clear as if they were above ground, not miles below it. It reminded her a bit of the feeling that a dark spell leaves after it’s cast – the remnants of the darkness seem to float around, attaching themselves to any living being, like filmy droplets. An uneasy feeling spread through Hermione’s limbs. It was a feeling that made the hair on her arms stand up, her shoulders tense.