Related Clues:

• Trail marker
• Detect like a dog
• Gasoline additive
• Word in the title of a Pacino film
• Chanel offering
• Trail for a hound
• Potpourri emanation
• Odor
• Obsession, for one
• Means of detection
• Lavender, for one
• Pleasant smell
• Lead provider
• First word of a Pacino film
• What a bloodhound tracks