Chinese scientists develop mask that detects COVID in the air - Sydney Morning Herald

Singapore: Chinese researchers have developed a mask that lets users know if they’ve been exposed to COVID-19 or the flu, a development that could help vulnerable populations even as the use of face coverings falls and more nations ease virus restrictions.

A sensor built into a mask was able to detect the COVID-19, H5N1 and H1N1 influenza viruses in the air within 10 minutes and send notifications to a device, according to the study led by six scientists working with Tongji University in Shanghai.

The new device, which is mounted outside the mask with a rechargeable lithium battery, was tested by spraying pathogens on it in an indoor setting, simulating a likely scenario where someone is talking or coughing.