Scientists working on bacteria and viruses killing plasma device

Researchers have demonstrated a prototype device that can rid hands, feet, or even underarms of bacteria, including the hospital superbug MRSA.

The device works by creating something called a plasma, which produces a cocktail of chemicals in air that kill bacteria but are harmless to skin.

A related approach could see the use of plasmas to speed the healing of wounds.

Writing in the New Journal of Physics, the authors say plasmas could help solve gum disease or even body odour.