“…The effects of chronic exposure appear to be less well established. A recent review of medical literature indicates likely impairment from chronic low-level exposure, as well as impairment from nonfatal acute exposures (Yost 2012). According to OSHA (2012), "Repeated bouts of carbon monoxide poisoning may cause persistent signs and symptoms, such as anorexia, headache, lassitude, dizziness, and ataxia.…”