Possible Clues:

• Aromatic oil from metropolis endlessly attracting Reagan and Fitzgerald?
• Grass, I recall, not half-cut
• A nice troll? Absurd - that stinks and is repellent!
• Fragrant oil
• Is that not repellent to burst into cellar?
• Insect repellent sprayed into cellar
• -- oil, used in perfumery
• -- oil, used as an insect repellent
• Insect-repelling oil
• A S Asian grass