CO kills
PARTS PER MILLION CONCENTRATIONS
Here is what the "parts per million" concentrations of carbon monoxide mean to your health:
100 ppm .01% Slight headache in two to three hours
200 ppm .02% Slight headache within two to three hours
400 ppm .04% Frontal headache within one to two hours
800 ppm .08% Dizziness, nausea, and convulsions within 45 minutes. Insensible within two hours.
1,600 ppm .16% Headache, dizziness, and nausea within 20 minutes. Death in less than two hours.
3,200 ppm .32% Headache, dizziness and nausea in five to ten minutes. Death within 30 minutes.
6,400 ppm .64% Headache and dizziness in one to two minutes. Death in less than 20 minutes.
12,800 ppm 1.28% Death in less than three minutes.
someone i know died of CO poisoning
(and from what your post said, you're at 1/8 the lethal dose . yikes!)