<prompt> of COHb that can cause death -70827580  <response>: Ans. is b i.e., 82 Symptoms of CO poisoningCOHbSymptoms0-10None10-20Breathlessness on moderate exertion, headache, weakness20-30Throbbing headache, irritability, defective memory, rapid fatigue30-40Nausea, vomiting, dizziness, dimness of vision, confusion, cherry red color40-50Increasing confusion, ataxia, rapid respirations collapse with attempts at exertion. Symptoms resemble alcohol intoxication50-60Coma with intermittent convulsions, tachycardia with weak pulse red discoloration of skin60-70Increasing depth of coma with incontinence of urine feces70-80Profound coma with absent reflexes, thread pulse, shallow respirations death80Rapid death from respiratory arrest. 