When is it necessary to wear a dust mask while working with wood?

Wearing a dust mask while sanding or cutting wood is essential because these activities generate fine wood particles that can remain airborne and be inhaled. These dust particles can cause respiratory issues, including irritation and long-term health problems, particularly when working with certain types of wood, such as hardwoods or treated woods that may release harmful chemicals.

While painting wooden surfaces or applying finishes can also release fumes and particulates, the primary concern with dust masks specifically relates to the inhalation of wood dust generated during cutting and sanding. It's crucial to protect the respiratory system in these scenarios to ensure a safe working environment.