When functioning properly, your gas range should provide you with safe, reliable cooking options. Both the burners and the oven should not produce any significant amount of gas odors or smells. You might experience a slight odor when lighting your range or after turning it off, though this typically dissipates quickly. Always read your owner's manual before operating any Kenmore gas range so you're sure how to properly operate the appliance.
A slowly heating gas range might be caused by an improperly functioning igniter. According to the website Repair Clinic, modern ranges employ a "glow-bar" type of igniter. This igniter heats up using electrical current. Once it reaches the proper temperature, the range's gas valves automatically open and the glow-bar ignites the gas. If the igniter is failing, it will not reach the proper temperature fast enough, resulting in a long wait for the oven to begin heating.
Though slow heating is typically not a significant problem, slow heating and a gas odor might well be. The slow heating oven might be a result of a failing igniter, but it might also be caused by a gas leak somewhere that is not allowing you to properly heat the oven. If this happens, stop using the oven and contact a Maytag repair person. If the gas smell is strong or lingers, leave the home and contact the gas company immediately.
Like any appliance, you can avoid many problems by properly maintaining it. Read the owners manual and follow any guidelines for maintenance and inspection. Always keep your range clean because residue can impede it from lighting properly or can clog the gas valves, leading to improper range functions.