Moist food left uncovered can contribute moisture and odours to the cabinet. Appropriate covered storage helps keep the contents controlled without treating every droplet as an appliance fault.
What the observation tells you
The effect depends on the food, its starting temperature and the fridge design. A large uncovered bowl is a different condition from a sealed chilled pack. Covering food does not remove the need to cool and refrigerate it safely, and it should not hide an unexplained spill.
A useful next step
Use food-safe containers and follow the storage label. Record whether excess moisture began after an unusual food load. If water continues to collect with normal storage, inspect only the owner-accessible areas described in the manual.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.