At the end of the shoot I gave Finch an x-ray of my lungs. I had to have an x-ray because I got bronchitis – surprise, surprise – during the six months of filming. And Fincher does so many takes and lots of smoke shots. He got obsessed with the smoke. It had to float in a particular way. So I was just always sitting there in a cemetery of cigarette butts.  
- Helena Bonham Carter on filming Fight Club