The UK, AU and NZ spelling of 'odor' is 'odour'.
The word odor is a noun. The British English spelling is odour.
The suffix of "odour" is "-our." It is commonly used in British English spelling; in American English, it is spelled as "odor."
"Odour" (English spelling) or "odor" (American spelling).
The correct spelling is "deodorant" (odor preventative).
The British spelling of skillful is skillful in a British accent
The British spelling of supervisor is "supervisor."
The word is spelled smell, just as you spelled it
The British spelling is "squash" and the American spelling is also "squash." Both countries use the same spelling for this word.
The word is spelt as you have in the question. As it happens, there is no difference between the American spelling and British spelling of the words.
The British English spelling of marvelous (astonishing; wonderful) is marvellous.
British spelling: meagre
The correct spelling is "summarize" in American English and "summarise" in British English.