odoro

English "odour" has soured over the centuries into something you complain about; odoro stayed neutral, so a rose and a drain both have one. The verb is odori, to give off a smell: la kafo bone odoras. To smell something with your nose is flari, a separate verb, which spares Esperanto the English ambiguity of "the dog smells". A pleasant smell can be bonodoro and a stink malbonodoro or the stronger fetoro, so the judgement lives in the affixes, not the root.