Looking at the sky, ask yourself, this sky, happiness? Happiness is in the air, but I can't smell your breath.

望着天空，问自己，这片天空里，幸福还在吗？幸福在气氛里，我却闻不到你的气息。

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Take a deep breath and let your nose find out. Does the air smell fresh?

请你深吸一口气，用你的嗅觉去发现空气是否新鲜？

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When kissing a girl, or even sitting close to her, she won’t want to smell your bad breath or notice salad between your teeth any more than she’ll want to smell yesterday’s sweat.

当亲吻女性甚至紧挨坐下时，她们宁愿闻到你身上昨天的汗臭也不想发现你的口臭抑或是你齿间食物的残留。

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"In traditional Chinese medicine, they feel your pulse, look at your tongue and smell your breath, " he told BBC News.

BBC: Exhaled breath is unique fingerprint