Health and safety hazards of nanomaterials
The health and safety hazards of nanomaterials include the potential toxicity of various types of nanomaterials, as well as fire and dust explosion hazards. Because nanotechnology is a recent development, the health and safety effects of exposures to nanomaterials, and what levels of exposure may be acceptable, are subjects of ongoing research.
Source: Wikipedia — Health and safety hazards of nanomaterials (CC BY-SA 4.0)