摘要：氯酚类化合物在水中的存在量达到ppb浓度时即会出现明显的恶臭味。
Abstract: the existence of chlorophenol compounds in water volume reaches PPB concentration that there will be a stench.
这种报警器在检测到烟雾时，喷放出一种称为异硫氰酸烯丙酯的化合物，这种化合物是发恶臭的食物如芥菜、山葵和芥末酱的辛辣味道和气味的原由。
When it detects smoke, the alarm emits a compound called allyl isothiocyanate, which is responsible for the pungent taste and smell of stinky foods like mustard, horseradish and wasabi.
污泥释放的恶臭中几乎含有以上所有物质，其中五种为含硫化合物。
The odour from sludge contains almost all of the above pollutants, five of them are sulphur compounds.
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