If the air in a carton of milk was allowed to warm uo what would happen to it?

If the air in a carton of milk warms up, it will expand due to the increase in temperature, as warmer air occupies more volume. This expansion may cause the pressure inside the carton to rise. If the pressure becomes too high, it could lead to the carton bulging or potentially leaking. Additionally, warmer air can also accelerate the spoilage of the milk.