Sandy Scheltema has 10-month-old twins with respiratory tract infections and she says smoke from the controlled burn is making them sick.

Her doctor wrote a letter to the Department of Sustainability and Environment asking it to delay the burning off until the children returned to normal health.

The health issue follows complaints from environment lobbyists, who say the burns are destroying Trentham's wetlands.

DSE defended the burns, saying low-intensity fires cause little damage to the environment compared with large-scale wildfires.

Ms Scheltema says the DSE had indicated it would postpone the burn, but she was called last Tuesday night and told it would go ahead on Wednesday.

She said DSE went as far as offering to pay for hotel accommodation during the burn offs.

"They're telling me they want me to go ... if I had one baby and people to help me then maybe, but I've got two and I'm on my own and they're sick and they need to sleep. It would be impossible even to get them out and in the car," she said.

"And I'm worried people are going to think I'm using my babies as an excuse. That's not the case at all. I have a letter from my doctor that says the smoke is harming them.

"I'm also concerned about the impacts the burns are having on wildlife, but my children come first at this stage," Ms Scheltema said.

"If you ask everyone in Trentham who lives on the edge of the bush none want this burning off. We all know the risks. We are prepared to protect our properties from fire ourselves," Ms Scheltema said.

The DSE says the Trentham burn has been extensively planned and has already been postponed twice this season.

In the past fortnight the DSE has burnt 10,000 hectares of land and said communities had been tolerant and appreciative of the effort during this time.

Regional environment group Wombat Forestcare organised a protest walk through the forest in March to demonstrate against the burning off.

At the time, DSE fuel management officer Lee Gleeson defended the burns, saying they were vital for the protection of surrounding townships.

Wombat Forestcare spokesman Murray Ralph said the area contained a breeding pair of the endangered powerful owl and the rare plant, wiry bossiaea.

Some Trentham residents are also worried the burns will have detrimental effects on the area's wetlands and soaks that feed creeks, rivers and springs.