Farting

Farting was a bodily process affecting humanoid species, involving the expulsion of gas. Farting was frowned upon by humans, due to its foul smell and loud noise.

When members of the Slitheen family used Compression fields to fit themselves into human skinsuits, it caused a condition called "gas exchange" which was similar to farting but with a smell like bad breath. This was due to calcium decay as Raxacoricofallapatorians were a calcium-based species. (DW: Aliens of London / World War Three)

Farting was still possible after death, as Owen Harper discovered shortly after being brought back to life by the resurrection gauntlet. (TW: Dead Man Walking)

Ingestion of food such as cabbage, (SJA: Revenge of the Slitheen) and baked beans, (K9TV: The Bounty Hunter) could induce farts.

Many people thought farting humourous. (SJA: Revenge of the Slitheen)

When Blon Fel-Fotch Passameer-Day Slitheen, in the form of Margaret Blaine, took Cathy Salt to the toilets to kill her, she noted her "little tummy" was "complaining" when she farted loudly. Soon after, when she farted after entering the toilet, Cathy remarked, "Sounds like we got here just in time.". (DW: Boom Town)

When the Abzorbaloff absorbed Bliss, her face ended up on his right buttock. When Elton Pope asked where she was, the Abzorbaloff lifted himself up, farting as Bliss told him he didn't want to know. (DW: Love & Monsters)

When Mr Smith emitted a high frequency noise to destroy the Rakweed inside Tree and Leef Slitheen-Blathereen's bodies, they emitted gas which killed them from the inside, effectively "farting them to death". (SJA: The Gift)