I almost had a disaster today, but I managed to avoid it :)
Cheese on toast isn't the most exciting of dinners, or the most tricky ... I am very confident in being able to cook cheese on toast without problems (unless you count slightly burnt toast around the edges as a problem).
My partner wanted fancy cheese on toast. Buttered toast, with ketchup smeared, then Italian herbs and finally the cheddar. This was no problem.
I fancied egg on cheese on toast. every now-and-then, it's nice to have a fried egg on your cheese on toast, so I turned the hob on. I realised that I had left a new tin of chocolates beside the hob, and these would melt, so I reached over to move the tin. Of course, this meant me taking my hand off the burner dial, which stopped the piezo lighter from igniting the gas, the burner went out but the dial was still on full power.
After moving the tin out of the way, I went back to my frying pan, at which time I noticed the smell of gas. A quick scan and I realised what had happened, so I turned off the burner and wafted the gas away before igniting the hob again.
So, disaster averted.
The smoke alarm siren still blared, but hey - I was using the grill, and the smoke alarm always fires when I use the grill!