DANVILLE — A Danville man is believed to have died from carbon monoxide poisoning caused by the hookup of a generator at his home trailer during yesterday's power outage.

"There was a generator running and the house was full of carbon monoxide," said Danville police Sgt. Ryan Furman.

Six other people from Windham and Londonderry, including two children, also were apparently overcome by the gas and treated at local hospitals. Their conditions were not believed to be life-threatening.

In Danville, authorities declined to identify the 49-year-old victim pending notification of next of kin. He lived alone at the Four Seasons adult campground off Long Pond Road, said Furman.

A neighbor discovered the man and called 911 about 10 a.m. yesterday, Furman said.

Furman said the death was being investigated by the state fire marshal's office but the cause is believed to be carbon monoxide poisoning.

A few towns over, in Windham, about 11 a.m., firefighters transported five family members from a Chestnut Street home to Elliot Hospital in Manchester after someone hooked up a generator in the home's garage, Windham Assistant Fire Chief Bob Leuci said.

Fire Chief Tom McPherson said it did not appear that the injuries were life-threatening.

The grandmother, grandfather, uncle, 3-year-old boy and 6-month-old girl were treated at the hospital. No further information was available.

In Londonderry, fire Chief Kevin MacCaffrie said the department transported a Shasta Road person to Catholic Medical Center in Manchester for carbon monoxide poisoning.

"(The person) had been running a household generator in the garage," MacCaffrie said. "Any gas-powered generator should be outside."

Carbon monoxide is odorless and tasteless, Leuci said. "It's a silent killer," he said.

State Fire Marshal J. William Degnan is warning the public about the threat of carbon monoxide exposure from the use of generators and alternative heating devices.

When using a generator, have it at least 10 feet from your home with the exhaust facing away from the house. Never run a generator inside any building, including a garage with an open door, Degnan said.

Carbon monoxide also can be a problem with temporary cooking appliances or space heaters, motor vehicles left running in attached garages or adjacent to a building, generators used during power outages, or any other type of fuel-burning appliance.