some years ago working in a factory machine shop a 17 year old apprentice went missing off the shop floor, they knew he had signed in on the morning and was there for tea break but nobody could remember seeing him after that apart from one labourer who saw him walking off down the shop with a bucket in his hand.
A search finally found him in the toilets with his head over a bucket of trique, he was dead as a government promise after inhaling the stuff for an hour at least, it appears he had become addicted to the stuff after working on the degreasing for months.