Possible Clues:

• Tornado converted into Hummer?
• Aromatic substance
• Aroma emitter
• Tornado (anag)
• Tandoor cooking, though aromatic, ...
• One scents old bishop is going to give a harangue
• Emitting a smell
• Something that gives a characteristic smell
• Aromatic tandoor stew
• Oh, do hold forth in an old, smelly way