它几乎有一种没有气味的气味。
罗旭和同事们发现，没有气味的情况下，两组人的正确率均为大约60%。
Rasch and colleagues found both groups were correct about 60 percent of the time without any odor assistance.
信息素是一种没有气味的化合物。不仅男人和女人，很多动物和昆虫都会散发这种气味。
Pheromones are odorless chemical compounds emitted not only by men, but also by women — and a host of animals and insects.
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