What is Blood agent?
A '''blood agent''' is a [[poison]]ous [[chemical]]. A blood agent makes it impossible for a person's [[blood]] to hold [[oxygen]] and [[circulatory system|bring it to the rest of the body]].<ref>{{cite web |url=http://emergency.cdc.gov/agent/blood/ |title=Blood Agents |author=<!--Staff writer(s); no by-line.--> |date=April 18, 2013 |website=CDC: Emergency Preparedness and Response |publisher=[[CDC|United States Centers for Disease Control]] |access-date=February 5, 2016 }}</ref> Every part of the body needs oxygen to survive. Blood agents can cause life-threatening [[symptom]]s like [[seizure]]s or [[coma]], which happen because the [[brain]] is [[hypoxia|not getting enough oxygen]]. In high enough doses, blood agents can make a person [[suffocation|suffocate]].<ref name=primer>{{Cite report |author=Hayer, Robert J. |date=January 10, 2006 |title=Introduction to CBRNE Terrorism: An Awareness Primer and Preparedness Guide for Emergency Response |url=http://www.disasters.org/dera/library/Heyer%20WMD.pdf |publisher=The Disaster Preparedness and Emergency Response Association |access-date=February 3, 2016 |archive-date=March 29, 2016 |archive-url=https://web.archive.org/web/20160329170401/http://www.disasters.org/dera/library/Heyer%20WMD.pdf |url-status=dead }}</ref> When they are used on purpose to kill many people, blood agents are [[weapon of mass destruction|weapons of mass destruction]] (WMDs).<ref name=whitehouse>{{Cite report |author=National Science and Technology Council Committee on Homeland and National Security, Subcommittee on Standards |date=May 2011 |title=A National Strategy for CBRNE Standards |url=https://www.whitehouse.gov/sites/default/files/microsites/ostp/chns_cbrne_standards_final_24_aug_11.pdf |publisher=Office of Science and Technology Policy |page=4 |access-date=February 3, 2016 |archive-date=April 18, 2016 |archive-url=https://web.archive.org/web/20160418112446/https://www.whitehouse.gov/sites/default/files/microsites/ostp/chns_cbrne_standards_final_24_aug_11.pdf |url-status=dead }}</r