It does go into the airway, hopefully the reflex cough pushes it out but if not the water can have a small amount be absorbed, and theoretically can evaporate and leave the lungs (breathing out in a steamy shower is sort I’ve a demonstration of this). And if the water doesn’t come out (happens due to a defect or above a small amount of water is in the lungs at a hospital the liquid in the lung can be drained out. If food however gets trapped in the airways and cannot be dislodged a removal under anesthesia with a bronchoscope is necessary.
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