DooJoon - he’d be reluctant to kill it but would feel the burden because he’s the leader
Yoseob - he’d keep a considerable amount of distance in between him and the bug
Dongwoon - being a maknae, he’d probably be shocked speechless
Gikwang - he would grab a broom and hunt it down.
Junseung - 4D Hyunseung would want to keep it as a pet while Junhyung would nag at him to kill it instead