The document from Kashaneh Academy discusses the importance of fresh air in indoor environments and highlights sources of carbon monoxide, including common appliances and vehicle emissions. It emphasizes the need for proper ventilation to ensure safety and health. The text also appears to reference standards related to fresh air requirements.

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PROFESSIONAL
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WHY FRESH AIR?
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CARBON MONOXIDE: SOURCES
Gas, Kerosene and wood stoves, charcoal grill
Room and water heaters
Fireplace, furnace
Leaking chimneys and vents
Vehicle emissions in closed garage
Tobacco smoke
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HOW MANY FRESH AIR?
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STANDARDS
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