hazard(a potential source of danger: a fire hazard | a health hazard. NOED Alexander Demidov); major hazard(Alexander Demidov); ultrahazardous activity(An ultrahazardous activity in the common law of torts is one that is so inherently dangerous that a person engaged in such an activity can be held strictly liable for injuries caused to another person, even if the person engaged in the activity took every reasonable precaution to prevent others from being injured. wiki Alexander Demidov); safety hazard(grafleonov)
