An eccentric Chinese multi-millionaire is selling what smoggy Beijing dearly needed in the past two weeks -- fresh air.

Chen Guangbiao and his colleagues have taken to the streets to sell hundreds of cans of fresh air -- purportedly collected from far-flung and pristine regions of China.

Beijing's air quality often registers far into the unhealthy zone, but this month has shocked citizens with the worst ever recorded smog.

Chen started his campaign last September.

Footage provided by his office shows a truck which sold his cans as it made its way across the country.

Footage provided by him shows people holding the cans performing a slow dance and scooping the air inside.

Proceeds from selling the cans for five yuan each will be donated to charity.