Profile: Breathe E-Z Systems, Inc. specializes in hydrogen and carbon monoxide breath detection instruments. The EMT Sleuth is a rugged, watertight, precision instrument that is lighted to detect carbon monoxide day or night in firefighters and in victims of smoke inhalation. This instrument comes with a waterproof foam packed case that will hold the instrument, mouthpieces and a carbon monoxide chart. The EMT Sleuth displays the amount of carbon monoxide that a firefighter or victim has inhaled from the fire. This instrument displays an indirect, non-evasive measure of blood carboxyhemoglobin in the person being tested. The CO Sleuth carbon monoxide breath test has been proven to be extremely successful for smoking intervention testing in smoking cessation clinics. The CO Sleuth, a carbon monoxide breath test, is a simple, non-invasive way to measure carbon monoxide poisoning in a patient enrolled in a smoking cessation program.