The entire house was pervaded by a sour smell.

整所房子都充满了酸味。

《牛津词典》

The smell of the wildebeest was sour. At the top of the slope, the house was still dark.

羚羊身上的气味酸得刺鼻，上到坡顶后，屋里还是一片漆黑。

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There was also a special smell inside these stores - smell of cabbage, beetroots, carrot and sour cucumbers.

在这些蔬菜水果商店中也会有一股特别的味道：包心菜，甜根菜，萝卜，酸黄瓜的味道。

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Hairy nosed wombats often choose to dig their burrows, made up of a series of tunnels, below these acacia trees, also known as stinking wattle as they smell like sour cabbage.

BBC: Protecting a wombat species that is as fast as Usain Bolt

The fermentation that occurs after a few days gives the starter its sour smell.

NPR: Sourdough: More than a Bread

At the first smell of fish, expect a 10 times valuation and if operations turn sour 8 times earnings.

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