她嗅了嗅花朵，闻到一股甜美的香气。

She ___sniffed the flower and smelled a sweet fragrance.

她闻了闻那件廉价外套，轻蔑地哼了一声。

She ___sniffed at the cheap jacket, showing her disdain.

侦探嗅出了这个案件背后的阴谋。

The detective ___sniffed out the conspiracy behind the case.