Dyson invents the air purifying headphones

Dyson, the UK manufacturer made famous by selling upmarket vacuums based on jet engines or something like that, has unveiled a set of headphones that also blow purified air into your mouth.
The Dyson Zone is a ‘wearable air purifier’ designed to protect the wearer from city pollution including gas, allergens and particulate matter while blasting your favourite tunes unmolested by roadworks thanks to some noise cancelling gubbins.
It works thanks to two spinning things in the headphon