a56d19bc_A_Practical_Guide_to_First_Aid__Chemical
[Route of Exposure] Inhalation [Suggested Recommendations] Victims who have been exposed to airborne concentrations of 500 ppm or higher may pose a threat to responders due to hydrogen sulfide being released from their clothing, skin and exhaled air. (US Chemical Safety and Hazard Investigation Board, 2003) Amyl nitrite has been recommended as an antidote to hydrogen sulfide toxicity. However, its use is controversial. Consult with a doctor knowledgeable about sulfide toxicity and treatment to determine the appropriateness of using amyl nitrite as a first-aid measure in your workplace and to develop protocols and arrange for specialized, advanced training for first-aid providers who may be required to administer amyl nitrite. (ATSDR, 2011b, Guidotti, 1996, Milby, et al. 1999) Double bag, seal, label and leave contaminated clothing, shoes and leather goods at the scene for safe disposal. [Chemical] 
Hydrogen sulfide
CCOHS: Products & Services: The MSDS - A Practical Guide to First Aid
Chemical