"Hazmat," hazardous material, dangerous goods, whatever you call it, call it "man made" in most cases.
Biohazards belong to nature or God, whatever your preference. HazMat, an abbreviation for hazardous material, may be something simple like bleach. Then again, it might be something complicated, like plutonium or yellow cake uranium.
See Wikipedia's excellent handling of this term: Hazardous Material