They've been trying to work/get the 'bugs' out of the system. [=trying to fix the system's problems]
He was first bitten by 'the' acting 'bug' [=he first became interested in acting] when he was 18.
Her legs were covered in 'bug' bites. [=itchy or painful wounds from insects]
(..) are a bit afraid of you. I'm used to it. When I found you, I thought you'd been dead for days. The way you were stinking already and you had bugs all over you and bone was coming through right there. I was gonna give you a proper burial and then you coughed. Oh, nearly shit myself. (..)2016 TvShow: Game of Thrones Title: The Broken Man Season: 6 Episode 7