We have a friends who raises goats and heat with LP . He and his wife are now experiencing the same symptoms. Doctors here are stumped and have changed doctors/clinics for answers. He has had MRI and Cat scans with no results. He is a healthy 50yo male/She is healthy late 40 s.. The s/s they describe are: flu-like and commonly include severe headache, dizziness, weakness, eye stain to sight impairment sometimes involving vomiting, chest/rib pain, and confusion. Any ideas? We are thinking CO2 leak in home (Just purchased monitor) or a disease carried by the goats. Thank you!