My friend and I were going to make chicken tempura, a time-consuming but delicious dish that involves dipping bits of chicken in a special batter and then deep-frying them in a wok pan filled with vegetable oil.
We had everything ready, but it would take some time to heat the oil. It also occurred to us that we didn't have anything good to watch while we were eating. So, I made a quick trip to the local video store to procure some entertainment, while my friend stayed and watched the pan of oil.
When I returned, the house was full of mysterious, smelly fog. Turned out my friend had decided to pass the time by reading one of my Lupin III comic books, and gotten so absorbed in the famous rouge's misadventures that he had completely forgotten about the oil on the stove.
We opened every window we could find, and soon enough got rid of the fog, but the smell remained for the rest of the day.
The food turned out great, though!