I caught a faint odour of violet sachet.

我闻到一股紫罗兰香粉的淡淡的清香味儿。

White or slightly yellowish, free-flowing powder with a faint characteristic Odour and practically no taste.

白色或接近微黄的自由流动粉末，具有微弱的气味或接近无味。

The room held the faint, sweet odour of pipe tobacco.

房间内有烟斗烟丝的淡淡馨香。

Conversely, fights might be started by putting people in the presence of a faint foul odour.

相反地，让人们带在很微弱的臭味中，就可能发生争斗。

Carbon dioxide Inorganic compound, a colourless gas with a faint, sharp odour and a sour taste when dissolved in water, chemical formula CO2.

二氧化碳一种无机化合物，无色而略带刺鼻气味和酸味的气体。化学式CO2。