fartocline
The gradient of stench resulting in a differential temperature between recently expelled methane (farts) and the surrounding air. This creates a layer of hot rancid air.
Person 1: 'I've been farting all night, and I suggest you lie down and stay under the fartocline'
Person 2: 'It's okay I've just added to it, looks like we won't be able to stand up for a while.....'
Person 2: 'It's okay I've just added to it, looks like we won't be able to stand up for a while.....'