许多除臭剂旨在遮盖体味难闻的气味。

Many deodorants are designed to mask the unpleasant ___odour of body odour.

旧地窖里的空气污浊，有一股明显令人不快的气味。

The air in the old cellar was stale and had a decidedly offensive ___odour.

实验过后，实验室里弥漫着一股刺鼻的化学气味。

A pungent chemical ___odour filled the laboratory after the experiment.