Never store a full container indoors, and never store flammable liquids near the grill. Always transport the LP container is a secure, upright position, but never keep it in a hot car or car trunk. Heat will cause the pressure to increase, causing the relief valve to open and allowing gas to escape. Always follow manufacturer's instructions when connecting or disconnecting LP gas containers. Each year, there are about 400 injuries treated in the emergency room and about 20 deaths, as a result of carbon monoxide poisoning from charcoal grills.
Carbon monoxide is produced when the charcoal burns.
To reduce CO poisonings, follow these safety tips. Never burn charcoal inside of homes, vehicles, tents, or campers. Charcoal should never be used indoors, even if ventilation is provided. Since charcoal produces CO fumes until the charcoal is completely extinguished, do not store the grill indoors with freshly used coals. The Consumer Product Safety Commission.