The 46-year-old woman believed she felt unwell after coming into contact with the letter about 12.40pm on Monday.

Firefighters attended a home on Olive Street in Albury, near Hume Street, with police and paramedics.

They used breathing apparatus to enter the property.

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A man aged about 30 did not have symptoms, but was decontaminated as a precaution.

The woman was assessed by did not require treatment.

The letter did not appear to contain any substances.

"Firefighters entered the premises in breathing apparatus to retrieve the letter, which was then placed in a suspicious substance packages kits," Albury Central station officer Glenn Kimpton said.

"It was handed to police to be sent off for further tests.

"No-one was transported to hospital."

It followed a similar case at the Australian Tax Office in May where green powder was found in a letter, which caused the third floor of the Albury building to be evacuated.

It was later found to be a benign substance, possibly glue from an envelope.

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