This week brought the 115th confirmed case of polio, a crippling and at times fatal disease passed on virally, mainly through bad hygiene.

这是一种致残，偶尔会致命的病毒性传播疾病，主要源于糟糕的卫生环境。本周115例确诊，患病总额远远超出去年数值。

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Bad smells are not just a matter of poor hygiene. Illness and old age both bring characteristic odours of their own, and neither state makes people more attractive.

难闻的味道不光是不卫生的问题，疾病和衰老都具有各自的特色气味；不过上面的这两种情况都不能增加人的吸引力，但是香水却可以粉饰上述问题。

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The hygiene conditions are very bad, the hand pumps for clean drinking water are not good enough.

卫生条件非常差，手动机井提取干净饮用水的办法也不够好。

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Beyond obvious mood spoilers such as poor hygiene and bad breath, we each have a distinct natural scent that appears to guide us toward choosing a partner with compatible DNA. Scientists have found that women prefer the scents of men with a complementary set of genes that code for the immune system.

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The global burden of illness owing to dirty water, bad or non-existent sanitation and poor standards of hygiene is remarkable, according to the studies cited by Mr Rijsberman.

ECONOMIST: Economics focus