Death can occur in severe cases. Seek prompt medical attention. Future exposures can cause further attacks. Symptoms may be delayed for days after exposure. Some persons later develop lung scarring after such exposures.
Eye contact can cause redness and itching as well as swelling of eye lids.
Sometimes an eye allergy develops. If this occurs, even very small future exposure can cause these symptoms. Skin contact can cause irritation and even burns. There is some evidence that it causes lung cancer in humans and it has been shown to cause bone cancer in animals. Many scientists believe there is no safe level of exposure to a carcinogen.