blow something out of proportion idiom
对（事情或问题）小题大做
to treat a particular event or problem far too seriously
It's ridiculous - we have a tiny disagreement and you blow the whole thing out of proportion! 太可笑了——我们只是有点小分歧，而你却把整件事闹得这么大！
Of course, when the papers get hold of a story, it's blown out of all proportion. 当然了，一旦报纸知道了一则传闻，就会大肆渲染一番。