An odour is a smell, and dictionaries are honest when they add “especially an unpleasant one.” That is how the word often leans in real life: the odour of smoke, the odour from the bins, body odour. Though actually, writers still use it for any smell they want to name with a slightly careful, slightly old voice — the odour of roses, the odour of rain on hot stone.

An odour odour（氣味） is a smell就是氣味 and dictionaries are honest when they add “especially an unpleasant one.”字典會老實加註「尤指不好聞的氣味」 That is how the word often leans in real life這個字在現實生活裡也常常這樣偏向 the odour of smoke, the odour from the bins, body odour像the odour of smoke（煙味）、the odour from the bins（垃圾桶的臭味）、body odour（體味） Though actually不過其實 writers still use it for any smell they want to name with a slightly careful, slightly old voice作家還是會用這個字，帶著一點講究、有點老派的語氣來講任何氣味 the odour of roses, the odour of rain on hot stone像the odour of roses（玫瑰的香氣）、the odour of rain on hot stone（熱石頭上雨水的氣味）

It is the British spelling. American English writes odor and means the same thing. In speech, smell is the everyday word; odour sounds a step more formal, the kind of word you meet in notices, novels, and school English.

It is the British spelling這是英式拼法 American English美式英文 writes odor寫成odor and means the same thing意思一樣 In speech在口語裡 smell is the everyday word smell是日常用字 odour sounds a step more formal odour聽起來正式一點 the kind of word you meet in notices, novels, and school English是那種你會在告示、小說，和學校英文裡遇到的字

Body odour is a set phrase (people shorten it to BO) for the smell a warm unwashed body gives off.

Body odour body odour（體味） is a set phrase是個固定用語 (people shorten it to BO)（人們會縮寫成BO） for the smell a warm unwashed body gives off指的是溫熱、沒洗澡的身體散發出來的味道

If the smell is nice, scent and fragrance usually feel more natural. If it is clearly bad, stink and stench are stronger and ruder.

If the smell is nice如果味道好聞 scent and fragrance usually feel more natural用scent或fragrance通常比較自然 If it is clearly bad如果味道明顯很糟 stink and stench are stronger and ruder用stink或stench語氣更強、更不客氣