I wanted to make some burned onion rings, so I chopped up some onions and let it cook in oil on the stove. Heating the oil was taking a long time so I decided to leave the oven alone for a bit.
I came back after hearing the oil making crackling sounds and I immediately turned off the heat. When I lifted the lid slightly to assess what had happened, the oil suddenly started crackling again violently.
Did I just almost start a fire? As I understand, there can be no fire without oxygen, and by lifting the metal lid I introduced oxygen. Also my entire house smells like smoke.