Akademik

odor
US var. of ODOUR.

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odour [odour odours] (especially US odor) [ˈəʊdə(r)] [ˈoʊdər] noun countable, uncountable (formal)
a smell, especially one that is unpleasant

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a

foul/musty/pungent, etc. odour

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the stale odour of cigarette smoke

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(figurative)

the odour of suspicion

see also ↑body odour
Idiom: ↑in bad odour  
Word Origin:
Middle English: from Anglo-Norman French, from Latin odor ‘smell, scent’.  
Thesaurus:
odour (BrE) (AmE odor) noun C (especially written)

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Use this spray to remove household odours.

smell • • reek • • whiff • |informal stink • |especially written literary stench •
a/an odour/smell/reek/whiff/stink/stench of sth
a foul/putrid/powerful odour/smell/stench
give off a/an odour/smell/whiff of sth/stench
a/an odour/smell/stink/stench comes from sth
 
Example Bank:

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I smelled the distinct odour of something burning.

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odours from the local brewery

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An unpleasant odour came from the package.

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He suffers badly from body odour.

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There was an odour of decay in the house.

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Use this spray to remove everyday household odours.

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odor
another spelling of odour.

Useful english dictionary. 2012.