Four people who went to the aid of two men severely burned in a suspected P-lab explosion in Northland have reported sore throats, exhaustion and breathing difficulties - symptoms believed to be associated with exposure to the toxic chemicals.
The good Samaritans are on the mend, but a medical expert is urging them to seek an all-clear diagnosis from a doctor.
One of the burned men, 49-year-old Arthur Bruce Cornelius - who had been injured in previous P-lab explosions at Kaitaia and Kerikeri - died about 17 hours after the blast at Pakotai, 50km north-west of Whangarei, last Wednesday.
A 26-year-old Northland man who was with Mr Cornelius in the Pakotai shed blown apart by the explosion is being treated in the National Burn Centre at Middlemore Hospital in Auckland.
Kathy and Bruce Bartlett, who went to help when the explosion took place on the property next door to their lifestyle block, expected chemicals spread by the blast to have some effect on their health.