Emergency services were called to a South Wairarapa property after a man inhaled a dangerous gas.
Fire communications spokesman Mike Wanoa said crews had been called by paramedics about 3.30pm after initial reports that a man had been mixing chemicals and inhaled mustard gas.
The man was treated by paramedics and understood not to be in serious condition.
Featherston fire chief Colin McKenna said the gas the man inhaled was not mustard gas, but could have been dangerous.
"I don't know where the mustard gas thing came from... It was two chemicals that were mixed together, obviously they didn't go together though. The guy got a bit of a whiff of it and it knocked him over."
One of the chemicals was chlorine, he said.
McKenna understood the man was taken to hospital as a precaution and for observation.
Two firecrews from Featherston station responded, however the chemical mixture had been safely disposed of by the time they arrived and there was no danger to the public so they were stood down.
Wellington Free Ambulance spokesman Daniel Paul said the 43-year-old man was treated at the scene for shortness of breath and taken to hospital. He understood the effects of the incident on the man were "pretty minor."
- The Dominion Post
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