Any little scraps of food that have fallen onto the oven's bottom or racks will burn up which causes a bad smell. Because the oven gets hotter than usual when it self-cleans, the food that might not have burned before does now. And burnt cookies do not smell great...
A self-cleaning oven essentially heats up to the point that food material is burned off the surface. Almost all self-cleaning ovens lock during this process, but you should never open the oven during it. Also, ovens coated with Teflon have been known to release fumes which mightharm pets.
Not all ovens are self cleaning. This does reduce cleaning times, but is not a necessity.
Ovens can be cleaned with various types of methods. Ovens can be cleaned with gas or electric, self-cleaning, and even continuously cleaning.
The Maytag 30" Self-Cleaning Freestanding Double Oven Electric Range has great reviews on that feature.
The kenmore brand of ovens are the best self cleaning ovens.
You should use it only on outside surfaces.
Electric ovens have a self-cleaning mode that gas ovens usually don't have, and if they do, they are expensive. Most users prefer electric ovens.
Most self-cleaning ovens take from 7 to 10 minutes to do the cleaning process. Self-cleaning ovens will not need chemicals to clean them if they are cleaned on a regular basis.
Some locks on ovens just have to be slid to the other side in order to work. Newer ovens, have buttons that you push in order to lock the oven.
You'll always have to clean a bit, removing residue and other gunk that the oven can't clean on its own.
Electric ovens are very easy to clean if you have the right tools. When cleaning the surface and the burners, use an appliance cleaner that is specifically made to clean ovens or one that advertises that it cuts grease. Use a sponge or soft rag when cleaning the exterior so that you do not scratch the surfaces. Most ovens have a self cleaning feature, but if yours does not, you can turn the oven on to the highest setting for about an hour to bake off any food that may have been spilled while cooking.
You can buy table-top convection 'toaster' ovens for less than $100. You can also buy self-cleaning full-sized range-ovens for anywhere from around $1000 and up.
Cleaning ovens.