Last week I was feeling quite unwell, but I had lamb to use. I'd bought two packets and it's a real treat. We usually have minced beef, chicken thighs, sausages, etc.
Despite feeling incredibly ropey, I lovingly sliced veg. I browned onions, leeks, mushrooms, peppers, etc. Then I beautifully browned the chunks of lamb.
Once I had all the ingredients prepared, I added stock and put the timer on for 30 minutes, intending to make dumplings later.
I was feeling really quite faint unwell by then, so I decided that 30 minutes upstairs would help.
25 minutes later, DD3 called upstairs, saying "Mum... There's loads of smoke and it's been like that for a while, but I thought you were in the kitchen...."
It was so incinerated it was close to catching light. I'd left the heat on 9, instead of turning it down to simmer 
But, there was no fire and DD3 got a lesson about mentioning smoke/burning when you first smell it, not when it gets really strong. My fault entirely, but sad 