What is considered to be a safe level of carbon monoxide?

Carbon Monoxide and headaches?

• The furnace in our house broke down a few months ago, We paid someone to come and fix it. He tested the levels of carbon monoxide in the air and said it was on the high side, very close to but not at the deadly level. He said we didnt have to leave or anything. All winter long, Ive had a daily headache. It goes away when Im not home but not long after I walk in the door my head starts hurting again. Its also hurting worse when I wake up in the morning. Could there be a relation between the high levels of carbon monoxide and my headaches? Nobody else seems to be getting headaches though so it could be something else.

• Answer:

  those are classic symptoms of poisoning....get a CO detector (available at hardware stores, WAlmart, etc) and test the air ASAP!