Prosector
Generally, the risks to prosectors are low. Cadavers used for teaching purposes are embalmed before they are encountered by a prosector and students. Embalming fluid usually contains formaldehyde, phenol, Dettol, and glycerine which disinfect and kill pathogens within the cadaver. With exposure to embalming fluid, tissues and bodily fluids, such as blood, become fixed. Prosectors and students working with embalmed cadavers must always wear protective gloves, however this is more for protection against the harsh chemicals used in embalming such as formaldehyde and dettol which can cause moderate to severe skin irritation.
Embalming
Until the early 20th century, arsenic was frequently used as an embalming fluid, until it was supplanted by other more effective and less toxic chemicals. There was concern about the possibility of arsenic from embalmed bodies contaminating ground water supplies. There were also legal concerns because people suspected of murder by arsenic poisoning could claim that the levels of poison in the deceased's body were a result of post-mortem embalming rather than evidence of homicide.