'Smog is our best advertising': pollution has an upside for some | Oliver Milman

For companies who bottle pure mountain air, like one in Canada, plummeting air quality is a business opportunity. For the rest of us, it's a killer

For one company, at least, the world's escalating air pollution crisis has an upside. While billions of people live amid a fog of harmful airborne particles each day, Vitality Air, which sells bottled Canadian mountain air, is reporting a brisk trade.

"Our Chinese website keeps crashing. We are getting orders from all over the country, not just the wealthier cities," said Harrison Wang, China representative for Vitality Air. "When the air is bad, we see spikes in sales. The smog is definitely our best advertising".