Do I need my fan on when cooking in the oven?

Since we dry camp most of the time, we don't have ability to run the fan, so I either crack open a window in the kitchen or if the weather is good, I open the door. I do both always, when cooking whether stove top or oven.

We also found that the toaster (or most any kind of cooking), sets off the alarm, but opted to take back the toaster since we could only use it when hooked up, which rarely happens, and running the generator for the toaster is not worth it. Instead we placed a small fan on the shelf near the alarm and run it when cooking.