A Victorian paramedic feared she was having a stroke after becoming unwell at the Hazelwood mine fire, a union says.
The female paramedic on Sunday visited a staging area at the fire, which is blanketing Morwell with thick smoke and ash, before moving away to talk to members of the public.
She had been in the area a couple of hours when she became unwell and developed a severe headache, Danny Hill from Ambulance Employees Australia said.
"She said she felt like she was having a stroke, she couldn't speak properly and she was taken into Traralgon hospital," he told ABC radio on Wednesday.
Mr Hill said the paramedic is still unwell with chest pain and shortness of breath.
Ambulance Victoria regional manager Greg Leach said a paramedic working in Morwell assisting emergency services agencies with community information reported feeling unwell on Sunday night.
She was taken to the Latrobe Regional Health but did not need to be admitted to hospital, he said.
"We are acting on the advice of the chief health officer for paramedics at the fire front at the Hazelwood mine," Mr Leach said in a statement.
The situation is being regularly reviewed, he said.
"The safety of our paramedics is paramount."
The fire in the Hazelwood open-cut coal mine is expected to take at least another fortnight to put out.
Meanwhile, a firefighter has been injured fighting a long-running blaze in far East Gippsland.
The DEPI firefighter in his 40s suffered burns to his back, legs and hands on Tuesday night.
He was transported to the Latrobe Regional Hospital in a serious but stable condition and was later released from hospital.