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]
(..) on some ops yourself. I'm sure you could find a lot more blood trails and drag marks. Joker, I've had my ass in the grass. Can't say I liked it much. Lots of bugs and too dangerous. As it happens, my present duties keep me where I belong... ...in the rear with the gear. Tet. The year of the monkey. (..)1987 Full Metal Jacket