to smell gunpowder in the air 闻到火药味，察觉到不和的氛围

英文释义

To sense evidence of a noisy argument that is not occurring now, but has just occurred or will occur soon.

例句

Neither of the two people who work for me said hello when I returned from lunch, and since I could smell gunpowder in the air, I asked them what was wrong.

吃完午饭回来，两个为我工作的人谁也不跟我打招呼。由于闻到了火药味，我便问他们出什么事了。