Nathan Cunningham of Christchurch died after inhaling LPG.
The mother of the late Nathan Cunningham, a victim of LPG huffing, says the dangerous gas should be locked up in homes and shops.
Nathan died in 2007, aged 14, the youngest of three children. He suffocated on his own vomit after inhaling LPG.
He had taken the lethal substance
from the family's garage.
His mother, Anne Wroblenski, of Christchurch, supports the idea of a minimum purchase age to prevent children from buying LPG, butane and other huffing substances and urges retailers to lock them up in their stores.
But she said that not all products containing potentially fatal solvents could realistically be locked away.
