There's a Vine doing the rounds that seems to have got a lot of people in a bit of a... stink.
It's the volume & the speed it travels that troubles me - man caught farting by thermal imaging camera at airport http://t.co/caHQsNTyGb— Stephen Mangan (@StephenMangan) January 9, 2014
Yup, a video purporting to show an unidentified man caught farting by a thermal imaging camera.
But is it all that it seems?
The less easily persuaded argue that the warm air of a fart would in fact show up white and the dark colour of the mystery cloud indicates a cold gas, possibly an aerosol.
@laurenlaverne Don't be harrowed. It's fake. Black colour of cloud on thermal camera = cold. Probably can of compressed air. Not a fart.— Makes My Face Ache (@haggersnash) January 10, 2014
Also, there's the velocity. If it is a fart it's got some serious speed behind it...