Nanotoxicology is the study of the toxicity of nano-materials due to quantum size effects and enormous area to volume ratio, nanomaterials have distinctive properties compared with their larger counterparts that have an effect on their toxicity. Of the potential hazards, inhalation exposure seems to present the foremost concern, with animal studies showing pulmonary effects like inflammation, fibrosis, and carcinogenicity for a few nanomaterials. Skin contact and consumption exposure are a priority.Nanoparticles are often inhaled , swallowed, absorbed through skin and deliberately or accidentally injected throughout medical procedures. They could be accidentally or inadvertently released from materials implanted into living tissue. One study considers release of airborne designed nanoparticles at workplaces, and associated worker exposure from varied production and handling activities, to be terribly probable.