...and the latest rumble about Britney's 30min. departure from the stage last week was a setup for a failed drug test. The 'rumour' before was that she was paranoid about falsely failing a drug test and left the stage. My opinion is the same person is spreading both rumours, one to support the other.
All that I know is that in the 15 years GM Place has been around, no one has ever complained or left the stage due to smoke. Nice try Brit.