A SHED fire at an Earlston farm on Thursday was dealt with quickly by eight fire units from Benalla and Euroa from about 4pm.

The 72 square metre shed was fully destroyed despite emergency crews having the fire under control within an hour.

The HAZMAT 75 crew was also dispatched from Shepparton to monitor air quality after concerns were raised of there being chemicals inside the shed.

Violet Town CFA Captain Jeff Jennings said the air quality was found to be 'not a concern'.

“It turned out pretty reasonable in the end,” Captain Jennings said.

“But we’ve got to take precautions.”

Captain Jennings also said several explosions were heard before CFA units arrived and that the shed was close to a house which was threatened.

“We also found a number of undamaged oxyacetylene tanks afterwards.

“The shed contained the usual things found in such a shed such as timber and some tools, also a horse float and number of small motors.”

Fire investigators visited the site on Friday.