Possible Clues:

• In school clear up nasty smell
• Strong and unpleasant smell
• A foul smell
• The smell of Sunday's fish
• Scandal emanation, figuratively
• Old Bob had fish with unpleasant smell
• At last the fish has a stink
• It may make the nose wrinkle
• Cause for nose-holding
• So we get to the stink of the fish at last