Dr Cullen is a world expert in the chemistry of arsine gases, and he proved conclusively the generation of trimethylarsine gas from New Zealand sheepskins used as baby bedding.
Arsines are among the most toxic gases.
In the late 19th century it was proved that a form of arsine generated by fungus in the household environment had caused the deaths of a large number of children. And now a highly qualified researcher has proved that common household fungus can generate arsenical gas from New Zealand sheepskins. Dr Sprott said that the Ministry of Health had a clear responsi- bility to tell New Zealand parents that highly toxic gas can be generated from sheepskins used as baby bedding. Sheep skin studies. Dr Karen Poutasi, has conceded that toxic gas may be a cause of cot death.