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Sources of and Clues to Possible Carbon Monoxide

Posted On: November 6, 2009

Whats Invisible, has no Smell, and Leaves Flu-like Symptoms? Answer: Carbon Monoxide Millions of homeowners are exposed to Carbon Monoxide and do not know it until the family is exposed to a harmful amount at or about 70 ppm (parts per million) for over 3.5 hours. International limits for unsafe levels are between 15 and 35 ppm. Carbon […]