Musty Demeanour

When something has such a musty scent/feel, that it mentally affects your feelings and well-being and can lead to a variety of issues within oneself.

Rio: Yo G, what is that shoddy stench?
Charlie: What you saying? Has a wiff of the smell Yo that shit isn't shoddy, it's musty and is messing with mans head
Rio: For fuck sake, I'm gonna' have to tell my missus that I've got a musty demeanour

Owan Mardy

To be at such an extreme amount of "mardiness", you push people away and make a bad name and reputation for yourself.
Can be linked to being an "Oodan"

Dillon: ':joy: :joy:, your creps are musty'
Owen: 'Right we're 16 and 17 year old and you're still acting so childish...'
Dillon: 'Oh for the love of Omar Omar, stop being owan mardy'