A number of dangerous substances are frequently present, including paint, paint thinner, benzene, kerosene, mineral spirits, turpentine, lubricating/motor oils, and gasoline.  Hazards among them include these chemicals:
Chlorinated aliphatic and aromatic hydrocarbons in paint thinner can cause liver and kidney damage;
Petroleum hydrocarbons, an ingredient of gasoline, motor oils, and benzene, are associated with skin and lung [...]