The family had only just moved into the new-build home, she said.
They had put a petrol generator in the garage attached to the house because mains power could not be connected until the Monday.
"It was very lucky that we were all out until late on Sunday night and the generator was only switched on for a few hours before we were going to go to bed," the mum said. "If we had gone to sleep I am convinced none of us would have woken up." The woman, a business owner originally from Fiji, said she at first thought the family had been struck down with food poisoning. "Within a short space of time we were all vomiting and were very disoriented.
"I was crawling around on my hands and knees trying to stay conscious. I kept thinking I had to stay awake to save my family and I don't know where I got the strength from.
"One of my daughters was rolling around screaming and it was like something out of a horror movie. We were all very confused and terrified." The mum had the presence of mind to force her ill husband to phone a nearby family friend for help.
"I crawled to the door and managed to open it. The next thing I remember was waking up outside surrounded by police and ambulance people. The emergency services could not have been better.
"We are all recovering but it will be several days before we are back to anything like normal," she said.
"I never want to see any other family go through what we did. We had no idea petrol generators could be so dangerous. They really can be a killer."