A 23-year-old man has suffocated from using a generator inside a closed room after Cyclone Yasi cut power supplies, Premier Anna Bligh said.
She warned other north Queenslanders not to put themselves at risk.
Ms Bligh said the incident happened near Ingham.
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"Our condolences for the family of this young man," Ms Bligh told reporters in Cairns.
She said the man had been using a generator for power inside a closed room.
"This is a dangerous thing to do.
"The coroner wanted me to make people understand that if you are using a generator for power, doing it in a closed room without any ventilation means you are at risk from asphyxiation from diesel fumes."
