A smoldering cigarette caused about $35,000 damage to a northwest Salt Lake duplex Friday afternoon, according to Salt Lake Fire Battalion Chief Gordon Nicholl.

Lorraine Davis, a resident of the duplex at 619 N. Catherine Circle, was treated for smoke inhalation at the scene.Davis said she dropped a cigarette behind the cushion of her couch, Nicholl said. The fire was confined to a bedroom and attic in the residence, which sustained heavy smoke and water damage.