Israeli researchers have developed an electric face mask that cleans itself and could kill coronavirus.
The face-covering is powered by a mobile phone charger and will be sold for as little as $1.
A team of engineers has invented a self-cleaning mask that kills off coronavirus by running an electrical current through the filter.
Researchers at the Technion Faculty of Materials Science and Engineering say the electricity will heat up a carbon fiber layer and kill off any viruses that have settled on it.
A patent for the face-covering has been filed in the United States, and the team hopes to make it available for just $1.
Many standard face masks are made to be disposed of after one use, with the materials often taking years to degrade.
The new invention could help reduce the environmental impact of using billions of these disposable masks.
Campaign groups have already spotted masses of discarded face coverings washed up on beaches in Asia.
Gary Stokes, the founder of OceansAsia, said the ocean pollution caused by disposable masks will be substantial.
It is not known when the electric face mask will be available in the UK.
It comes after another Israeli company created a mask with a mechanical mouth for people to use when eating.
Avtipus Patents and Inventions announced last week that it had created a mask with a hole that opens when a fork is brought close to the face.