Which of the following statements is wrong about the principle of selecting dust masks?

The statement regarding the smaller the field of view being better is not accurate because an optimal field of view is essential for the safety and effectiveness of dust masks. A dust mask must allow the wearer to see clearly and maintain awareness of their environment, especially in settings where there are potential hazards. A mask that significantly reduces the field of view could lead to distractions or accidents, which contradicts the fundamental purpose of personal protective equipment: to enhance safety.

In contrast, mask fit is indeed crucial because a well-fitted mask ensures that contaminants do not enter through gaps, which maximizes the protective function. Regular replacement of dust masks is important because they can become less effective over time due to dirt, wear, or saturation. Finally, breathability is a key factor in mask selection; a mask that is breathable will be more comfortable, enabling longer use while still providing effective filtration.