Ameren Illinois wants natural gas customers to remember a short and simple phrase as they switch on their furnace --- "Smell Gas? Leave Fast."

Natural gas is safe and efficient when used properly, but it is important to understand the hazards. If you suspect you smell natural gas, which also smells like rotten eggs follow these critical safety precautions. Immediately leave your home or business, taking all people and pets with you. Call Ameren at 1-800-755-5000.

Do not turn lights on or off, operate thermostats, garage door openers, appliances, or any device that could cause a spark. Even the smallest spark in the presence of natural gas can lead to a fire or explosion. Do not use a phone or light a match or use anything with a flame inside or near the building. Do not open windows or doors to ventilate the building. Do not reenter the property for any reason until Ameren gives the all-clear and that it is safe to enter.

In addition to natural gas leaks, Ameren Illinois wants customers to be aware of carbon monoxide risks and follow proper safety precautions. CO poisoning can occur when fossil fuels and other materials are burned without proper ventilation. CO detectors should be placed within 15 feet of every room used for sleeping and tested monthly. If anyone is in your home and they are ill with flu-like symptoms and you suspect CO poisoning, immediately go outside and call 9-1-1. You can also call the poison control center at 800-222-1222.

For more information visit https://ameren.com/safety