Storage space under the kitchen sink does not have to be empty, but can be used sensibly. However, it is important not to store certain things under the sink, as this could pose a health risk.
High humidity that exists due to the proximity to the drain can make food go bad more quickly. Connected and switched off electronic devices can also be damaged in the long term by the high humidity. Various medications should also not be stored under the bathroom sink as they can lose their effectiveness when exposed to moisture and heat.