Occupational hazards of human nail dust

The use of podiatry drills, in the absence of engineering controls and personal protective equipment, is an occupational hazard to the healthcare provider. Nail dust collected during foot care procedures performed in office settings has been found to contain keratin, keratin hydrolysates, microbial debris, and viable fungal elements, including dermatophytes (most commonly Trichophyton rubrum) and saprotrophs.

Source: Wikipedia — Occupational hazards of human nail dust (CC BY-SA 4.0)