Willis is certain that this is not the case and is adamant that everything must be done to ensure the 2012 London Olympics are the cleanest Games for decades.
The International Olympic Committee has recently promised that these Olympics will be the cleanest, meaning that fewer athletes on performance-enhancing drugs will evade detection under a revamped testing system.
No wonder, given such vigilance and such penalties, the Atlanta Olympics in 1996 were declared the "cleanest" ever, with just two of the 2,000 athletes checked (out of a total 11,000 competing) failing a drugs test.But were the Atlanta games really the cleanest ever?
There is no disputing the cleanest-looking stretch of water in Rio on the eve of these Olympics.
According to Geoff Whitehouse from street art magazine Very Nearly Almost, the removal of street artworks started long before the Olympics, and is the result of the city's drive to show its cleanest side during the Games.
Natural gas is the cleanest burning fuel.
"The cleanest cut, the straight arrow guy.
"Not the cleanest, but bloody inspired".
