The Health Hazard is a Weapon Blueprint available in Call of Duty: Modern Warfare 3 (2022) and Call of Duty: Warzone 2.
It is a blueprint variant of the base weapon M13B, one of the Assault Rifles featured in Call of Duty Modern Warfare 3.
You can find all the attachments for the Modern Warfare 3 and Warzone 2 Health Hazard Blueprint listed below.
Here are the attachments for the Health Hazard Blueprint featured in Call of Duty: Modern Warfare 3 and Call of Duty: Warzone 2.
You can build your own Health Hazard weapon Blueprint by adding these attachments on a base in the Gunsmith menu.
To unlock the Health Hazard Blueprint in Warzone 2 and Modern Warfare 3 you need to find the Chemist in the Radiation Zone of DMZ, defeat him, and extract his dropped weapon. By completing this task you'll also unlock the base M13B weapon.