If your fridge is smelly it may because it is not cold enough. The temperature inside the middle of the fridge compartment should be 5 degrees or cooler. You can purchase a fridge thermometer from most good hardware or cookery shops to measure the temperature. If it is warmer than 5 degrees turn the thermostat knob to a larger number and this will make your fridge cooler. Finaly use an anti bacterial cleaner to thoroughly wash the inside of the fridge which will leave it fresh and hygienically clean.