Oil mist and oil smoke is generated from a number of various manufacturing operations. Before we can take the correct measures to overcome the risks and harm, we need to know specifically what oil mist and oil smoke really are.

In the process of machining with high speed and pressure, the oil droplets get very small (‹1 µm) and the amount of oil in the air is often high. In such operations, oil smoke occurs in a larger scale. As machining operations are carried out, these fluids are emitted in the form of aerosols and smoke to the surrounding air. It is, of course, unhealthy to breath these substances.

Vokesair, explains  how to get rid the metalworking fluid smoke and mist.