If not regular maintenance for the kitchen cabinet,moulds and bacteria will breed.They can easily cause illness of asthma and dermatitis for the old men and the youngsters.Then how can we deal with it? Suggestions as below for your reference.
Firstly, select the right material which is not easy to damp, such as acrylic panel,lacquer panel and metal panel etc.Have the fresh food sealed well , also keep the soy and soda water sealed well with the lid if unused in case liquid leakage.
Secondly,place an dampproof pad on the kitchen cabinet.Although it’s a thin layer ,it can asorb peculiar smell to prevent dampness and dirt.Even there is liquid leakage inattentively,it can’t permeate the pad easily to impact the cabinet carcase.

Thirdly, keep regular clean and good air ventilation for the kitchen room. If wet weather especially,you can  have the dehumidifier decreased the humidity in the kitchen room.