China is obsessed with disinfection against Covid. But it is causing more harm than good?

Hazmat suit-clad workers spraying clouds of disinfectant over city streets has become an everyday scene in pandemic-era China, but experts say it's largely pointless and could even be a danger.

In Shanghai, the epicenter of the country's largest outbreak, state media report that thousands of workers have been organized into teams to disinfect areas, with a focus on those known to have hosted Covid patients -- a move the government sees as key to curbing the spread of the Omicron variant.