Take the cookie tray and cookies outdoors as soon as you remove them from the oven. When the cookies cool, dispose of them in your outdoors trashcan.
Open the room windows, turn on the kitchen exhaust fan and open any outside doors. If you have a window fan, set it the exhaust mode so it blows the smoky air outside. At the same time, close off the interior doors so the burnt cookie smell does not travel to other areas of your home.
Clean the baking sheet. Then, check your oven. It is unlikely that cookie dough spilled and burnt in the oven, but if it did, sprinkle some salt on it to stop the odors, and then clean the oven after it cools. Thoroughly removing the source helps get rid of the odors.
Boil 1 cup of water mixed with 1 tablespoon of vinegar on your stove to get rid of food odors, according to Michigan State University. Simmer the mixture for approximately 30 minutes. If it doesn't seem to be working, add more vinegar.