"a rotten egg" in Chinese (Simplified)
臭鸡蛋坏人（比喻）
Definition
字面意思是变质的鸡蛋。非正式地，也用来形容行为不端或不可靠的人。
Usage Notes (Chinese (Simplified))
非正式表达。用于人时比较轻松幽默，多是开玩笑或对孩子。正式或严肃场合不用。字面只指变质的蛋。
Examples
The kitchen smells like a rotten egg.
厨房闻起来像**臭鸡蛋**。
Don't eat that; it's a rotten egg.
别吃那个；那是**臭鸡蛋**。
Tom played a trick and was called a rotten egg.
汤姆捉弄了别人，被称为**臭鸡蛋**。
Don’t worry, he’s just a rotten egg sometimes—he means no harm.
别担心，他有时只是个**臭鸡蛋**，没恶意的。
Who let a rotten egg into our group chat?
谁把**臭鸡蛋**带进我们群聊的？
You always know a rotten egg when you see one.
你一看就能认出**臭鸡蛋**。