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]
(..) But we can't go to sleep without a bedtime story. Well, then it's going to be a long night for you, isn't it? So, good night, sleep tight, and don't let the bed bugs bite. Because there are literally thousands of them. And there's probably something in your closet. He's just kidding, Agnes. (..)2010 Despicable Me
(..) This is too small for me! I hate that guy! ...and please watch over us, and bless that we'll have a good night's sleep. And bless that while we're sleeping, no bugs will crawl into our ears and lay eggs in our brains. Great. Thanks for that image, Edith. And please bless (..)2010 Despicable Me