https://www.siliconvalley.com/2021/06/29/face-masks-that-can-diagnose-coronavirus-harvard-mit-researchers-create-wearable-tech/

The face mask that you wear in the future could alert you of a coronavirus diagnosis, thanks to researchers at Harvard University and MIT.

Researchers have created wearable biosensors that can detect the presence of the virus in a person’s breath. These button-activated masks give COVID results within 90 minutes in a simple-to-read format similar to an at-home pregnancy test.