Related Clues:

• More than whiffs
• Appetite awakeners
• Albatrosses and red skies, to sailors
• Dark clouds, perhaps
• Black cats and dark clouds, e.g.
• Trash emissions
• Kitchen emanations
• Secret targets?
• Nose ticklers
• Foreshadowings
• Junkyard emanations
• Fumes features
• Sensory stimuli
• Eclipses, to some
• They may be absorbed by baking soda