A range hood is not just in a kitchen to vent smoke in case of a fire or a dinner disaster. They are in fact a crucial part of a kitchen design. Consider that professional kitchens have several tremendously large ventilation systems in use, and you can imagine the importance of a GE under cabinet range hood in your kitchen as well.
The black acrid smoke from a charred roast or burnt cookies may be unpleasant, but it is not the only dangerous pollutant to come from the cooking process. Think about it - you are cooking with oils, butter and fats, water and other substances, and putting them through a complex chemical process that often involves these substances evaporating into the air. Where does it go? Even in a large home, the air will recirculate with these pollutants until unless there is some way to pull them out into the outside air, namely your range hood. In fact, without proper ventilation these pollutants will settle on the walls and surfaces of your kitchen, discoloring and damaging them.
Range hoods are also necessary to pull unseen contaminants like carbon monoxide from your kitchen. Therefore it is not only a good idea to install a proper range hood in your home kitchen, but to remember to use it often, and not just because you forgot about the muffins in the oven and need to get rid of the smelly black smoke coming out of the oven.
In addition to these air cleaning benefits, many GE range hoods feature lighting systems to give you more light and visibility in your cooking area.