Dangers of carbon Monoxide

Good Info


What it is?

Carbon Monoxide is a colourless, Odorless gas and it can harm you even at small concentrations. Carbon Monoxide (CO) displaces oxygen which binds with the hemoglobin and thus suffocates the body. Carbon Monoxide can harm you in low concentration over a period of several hours. However, in higher concentrations Carbon Monoxide can kill in less than five minutes.

Please see table published by CMHC (Canadian Mortgage and Housing Corporation) below for concentration of carbon monoxide and their effects:

CO concentration in parts per million (ppm)


0 – 2

Normal  conditions in and outside Canadian houses.


Recommended  exposure limit over a 24-hour period.3


Recommended  exposure limit over a 1-hour period.3


CO  detectors are not allowed to sound alarm unless this concentration is  maintained for more than 30 days.2


CO  detectors must sound alarm within 1 to 4 hours.2


CO  detectors must…

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