Cold plasma can kill 99.9% of airborne viruses, new study shows. Dangerous airborne viruses are rendered harmless on-the-fly when exposed to energetic, charged fragments of air molecules, and scientists hope to one day harness this capability to replace a century-old device: the surgical mask.

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Cold plasma can kill 99.9% of airborne viruses, new study shows. Dangerous airborne viruses are rendered harmless on-the-fly when exposed to energetic, charged fragments of air molecules, and scientists hope to one day harness this capability to replace a century-old device: the surgical mask.