It is generally not necessary to open the door of a dishwasher to let the steam out for health reasons. Dishwashers are designed to contain the steam and heat generated during the wash cycle. Opening the door while the dishwasher is operating can disrupt the cycle, prolong the cleaning process, and potentially impact the effectiveness of the dishwasher.
Modern dishwashers are equipped with built-in mechanisms, such as vents and fans, to manage steam and moisture. These features are designed to release steam safely and prevent excessive moisture buildup inside the dishwasher. The steam released by the dishwasher is generally not a health concern, as it consists primarily of water vapor.
However, it's important to note that after the dishwasher completes its cycle, it is normal for some residual heat and moisture to remain inside. It's generally recommended to allow the dishwasher to cool down naturally and then open the door partially to let any remaining moisture evaporate. This helps prevent the growth of mold or mildew inside the dishwasher.
If you have specific concerns about the steam or ventilation in your dishwasher, it's best to refer to the manufacturer's instructions or consult the user manual for guidance.