Odourless means having no smell. A liquid, a gas, a cream, or a room can be odourless: your nose gets nothing.

Odourless meansodourless的意思是 having no smell沒有氣味。A liquid, a gas, a cream, or a room液體、氣體、乳霜，或一個房間 can be odourless都可能是odourless的：your nose gets nothing你的鼻子什麼都聞不到。

British English writes it this way; American English writes odorless. Same adjective, different letters.

British English writes it this way英式英語這樣拼；American English writes odorless美式英語拼成odorless。Same adjective同一個形容詞，different letters不同的拼法。

In shops it can be a promise — an odourless cream will not leave a smell on your skin. In science it can be a warning. A gas that is colourless and odourless gives you no sight and no smell to go on, so you may not know it is there.

In shops在商店裡 it can be a promise這可以是一種保證—an odourless cream一款odourless的乳霜 will not leave a smell on your skin不會在你的皮膚上留下氣味。In science在科學上 it can be a warning這可以是一種警告。A gas that is colourless and odourless一種無色又odourless的氣體 gives you no sight and no smell to go on讓你既看不到也聞不到任何線索，so you may not know it is there所以你可能不知道它就在那裡。

Daily English sometimes just says “it has no smell.” Odourless is the tidier, slightly school-and-label word for that fact. It is about the nose, not about taste, even when a Chinese label nearby says 無味.

Daily English sometimes just says日常英語有時候就直接說 it has no smell「it has no smell」。Odourless is the tidierodourless是比較整齊的、slightly school-and-label word帶點課本或標籤味道的字 for that fact用來說這個事實。It is about the nose它說的是鼻子的事，not about taste不是味覺的事，even when a Chinese label nearby says 無味即使旁邊的中文標籤寫著「無味」。