BOND HILL – The unfortunate combination of a cigarette and a homemade chemical solution to kill bed bugs started a house fire late Sunday that displaced two adults and an infant, Cincinnati fire officials said.

A woman treated a second-story bedroom for bed bugs at a home in the 7300 block of Scottwood Avenue about 10:30 p.m., they said.

She concoction a recipe made up of bug killer solution and 70 percent alcohol.

Then, she fired up a cigarette.

The fumes in the bedroom ignited and caught a mattress on fire, officials said. She unsuccessfully tried to extinguish it and then alerted everyone to get out of the house.

No injuries were reported.

The fire was confined to the bedroom, but there is smoke damage to the entire floor and attic totaling about $30,000.