Previous answer is not a good analogy - it is not like your body sweat. The part about the items from the freezer being cold is, of course, correct. The ambient air around this cold object contains water vapor (water as a gas). A certain amount of heat energy is required to keep this water in its gaseous state. The immediate environment around the cold object brings the air temperature lower than the dew point and the water vapor condenses out to form liquid water. The same thing happens on a glass of iced tea in the summer when water forms on the outside of the glass.
they become wet from the air temature like in a freezer it very cold and in a house its room tempature for an example its just like your body you sweat when it hot and when it cold you dont.do you get it now?