Scientists at St Bartholomew#;s Hospital in London have invented an odour-eating box for smelly shoes, especially trainers.

Human skin naturally produces nitric oxide, which kills bacteria. Sometimes, especially with regard to feet, the system fails to do its job properly and smelly feet are the result.

Every few weeks the box is activated with two chemicals whose reaction creates nitric oxide. Used trainers are put in to the box and come out the odour free, hospital representatives said.

From Peter Embling, Shoestyle