(especially with reference to something unwelcome or unpleasant) producing good effects; beneficial.
So, something is not objectively pleasant, but that provides good benefits overall. Found in a sabbatical application:
Rubbing shoulders with [discipline] scholars again with be salutary.
In this case, the use was more generic – rubbing shoulders with other scholars wasn’t viewed as negative; “salutary” just meaning “good” more generally.