A scarf against air pollution?

A French start-up has developed a scarf equipped with a mask that filters the air and 99% of pollutants. In parallel, users can watch the pollution in real time via the "SUP'AIRMAN" application to find out if it is better to wear their scarf. However, the French health agency in its recent report warns against the false sense of protection. The risk of overexposure in the event of misuse should not be overlooked.