Daughter, 22, saves family from gas leak after remembering school science lesson

dailystar.co.uk:

Oxfordshire Live that the family started smelling “rotting egg and the smell of death” around the house.They initially thought that it could have been blocked drains – and even turned to pest control.She said: “We cleared all the drains to make sure that it wasn't a blockage and even had the oil boiler checked.“We knew the smell was strongest in the garage."The confusing situation grew worse on Saturday, October 16, when Lucy returned home from work to find that all of her silver jewellery had tarnished.Ms Toman, who studied A-level chemistry – which came in handy – recalled how she learned at school about the “rotting egg smell” of the chemical, and about the oxidisation effects it has on silver.Her mum said: “At this point, we knew that.