Smoke can be defined as:

Smoke can be defined as small particles of solid or liquid suspended in air from combustion. This definition encompasses the variety of components found in smoke, which are typically produced when organic materials, such as wood, coal, or other substances, undergo incomplete combustion. The combustion process generates not only gases but also fine particulates—these can include soot (which is solid), ash, and vapors from burning materials.

In mining and other industrial environments, understanding smoke is crucial due to its impact on air quality and worker health. The particles in smoke can be hazardous, leading to respiratory issues and other health concerns for those exposed without adequate protection. The presence of smoke is often an indicator of fire or combustion processes, emphasizing the need for proper safety measures in environments where flammable materials are present.

Other definitions, such as those involving vapor, exclude the presence of solid particles and thus do not capture the full essence of what smoke is. This differentiation is important in contexts like fire safety and atmospheric analysis, where the physical state of materials significantly impacts the assessment of risks and hazards.