Bring lots of oxygen bottles and respirators... for the fans too, not just the athletes.
Smog in Beijing five times over safety limit as Olympics nears
http://www.timesonline.co.uk/tol/sport/olympics/article4276469.ece
not to pile on but..
Add locusts to China’s list of calamities
http://www.freerepublic.com/focus/f-news/2041505/posts