Related Clues:

• Olfactory stimulator
• Seaweed
• One may be disagreeable
• Rootless life of the sea
• It may be picked up in a locker
• Must, e.g.
• Olfactory stimulus
• Primitive aquatic organisms
• Aquarium growth
• ''What died?'' provocation
• Gasoline additive
• Reason to bathe
• Freshness indicator
• "What died?" provocation
• Pond scum and kelp