During the night you don’t require the same level of conscious cool. Try turning your AC down (so it is running less) during your sleep hours or, if your unit has one, utilize the “sleep mode” which lowers the output on a timer.
Keep your refrigerator at 37° – 40° to keep from wasting energy and having your food go bad. Crumple up a brown paper grocery bag and leave it inside your fruite and veggie bins for 48 hours. The paper will absorb the odors.