Similar to the word "Stench", meaning an awful smell, this has the same meaning except it only refers to buttholes. Ways of saying it may include "Something darches in here.", or "It smells darchy in here. Who the hell shit their pants?". People mostly use it in it's basic way.
Daechwita(대취타) is a legendary song by AgustD aka SUGA of BTS released on 22nd May. It's the title track of his second solo album series after AgustD, D-2. Available on YouTube now.
"So AgustD decided to droped the bomba few daysearlier as a 'suprise' but it didn't quite happen. Daechwita is totally a bop tho!"
Dachla is an alternative word for penis. However, one benefit of the word "dachla" is that it is uncommon, and therefore safer to use around family and friends. Furthermore, dachla may be used to refer to someone's group of friends in a humorous manner.