When she was woken by the sudden snap of lights turning on and the sound of her windowfan whirring to life, she took off the necklace and placed it back in her dresser drawer.
Smoke travels upwards, and if smokers are confined to the top level and adequate ventilation is in place (be it an open window or a small fan), then there can be no cause for concern to those non-smokers who sit downstairs.
