If you have a nose for news, you are good at finding news stories.

如果你对新闻有敏锐的嗅觉，你就善于发现新闻故事。

If you have a nose for news, you are good at finding news stories. It's like you can sniff out an interesting story.

如果说你“have a nose for news”，就是说你很擅长发现新闻故事，就好像你能嗅出一个有趣的故事一样。