As China’s pollution problems continue, a Canadian company has cashed in on the crisis by selling bottles of fresh mountain air to people for up to $28 (£18.50) each.
Beijing was issued its first ever red alert in December over its hazardous pollution levels, causing the capital to shut down schools and construction for a period of time, while attempting to take a percentage of the city’s cars off the road and telling people to stay indoors.
Since then Shanghai has seen its own smog problem hit its highest level since January, with schools being prompted to ban outdoor activities and factory work curbed on Tuesday.
But sales of Vitality Air - bottles fresh mountain air from Banff and Lake Louise, Canada – have soared in China. A single bottle of the company's "premium oxygen" costs $27.99 ($18.50) while a bottle of its Banff air costs up to $23.99 ($15.85).
Harrison Wang, Vitality Air’s China representative, told Mail Online that the minute the bottles went on sale in Taobao, a Chinese website similar to eBay for online shopping, they “sold out almost instantly”.
In pictures: Air pollution in China
In pictures: Air pollution in China
Skyline of Puxi, Huangpu River and the Lujiazui Financial District with the Oriental Pearl TV Tower, right third tallest, the Shanghai Tower, right tallest, the Shanghai World Financial Center, right second tallest, and other skyscrapers and high-rise buildings in Pudong at sunrise in heavy smog in Shanghai
A commuter walks in front of the China Central Television (CCTV) building on a smoggy day in Beijing
A magpie flies in heavy pollution in Beijing
A woman wearing a mask practices roller blading at Olympic Park during heavy smog in Beijing
Cyclists and vehicles travel on a road in heavy smog in Beijing
An electronic screen is seen through pollution in Beijing
Ground-staff (L) are seen under an Air China plane at the airport on a polluted day in Beijing
A man wearing a protective mask walks in Beijing
A subway passing bridge on a day of heavy pollution in Beijing
Visitors walk toward Linglong Tower during an extremely polluted day
Policemen wear protective masks at the Tiananmen Square on an extremely polluted day as hazardous, choking smog continues to blanket Beijing
Apartment rooms are lit up with lights during daytime on an extremely polluted day
A pedestrian walks on a bridge on an extremely polluted day as hazardous, choking smog continues to blanket Beijing
A man pulls his luggage past electronic screens showing the Olympic Green park under blue skies, near the National Stadium (R), or the Bird's Nest, amid heavy smog in Beijing
Chinese workers work on a unfinished building during a hazy day in Beijing
Heavy smog is seen in Beijing
Tiananmen Square is seen in heavy smog on a day of high pollution in Beijing
A Chinese paramilitary policeman stands guard on Tiananmen Square in heavy smog in Beijing
Tourists visit the Olympic Park during dheavy smog in Beijing
woman wears a face mask next to traffic shrouded in heavy smog in Beijing
Heavy smog has been lingering in northern and eastern parts of China, disturbing the traffic, worsening air pollution and forcing the closure of schools
Buildings are shrouded in smog in Changsha, Hunan Province
A ship sails up the Huangpu River as heavy smog engulfs the city in Shanghai
A man looks towards a bridge in heavy fog in Beijing
A man and his child wear masks as they visit The Bund in Shanghai. Heavy smog covered many parts of China worsening air pollution
Four workers walk through a panda sculpture during severe pollution in Beijing
A truck containing used plastic bottles travels along a highway covered in haze in Beijing
An attraction for visitors on Chaotianmen beach in Chongqing. The city of Chongqing is one of the fastest-growing urban centres on the planet but it is also suffering from very high pollution
Smoke rising from land as Chinese farmers clear their land for replanting on the outskirts of Tianjin. China's Environment Ministry said it will send inspection teams to provinces and cities most seriously affected by smog to ensure rules on fighting air pollution are being enforced
Steelworkers work at the Chongqing Iron and Steel Factory in Chongqing Municipality
The company started marketing the product in China less than two months ago, but now that the first shipment of 500 bottles is sold out, another of 700 bottles is on its way.
Mr Wang said the company sees pollution as an issue in China “and we want to give people the opportunity to inject a little bit of fresh air into their daily lives”.
Vitality Air markets itself as “enhancing vitality one breath at a time,” and says it can help with “hangovers, alertness and working out,” as well as being “your solution to pollution”.
But Vitality Air is not the only business cashing in on China’s pollution problem – a restaurant in in Zhangjiagang city recently started charging patrons for fresh air, after owners bought air filtration machines for the establishment and added a surcharge to people’s bills for the operation costs.