Leave immediately, leaving the door open for ventilation. Go to a neighbor's house and telephone the gas company. If the odor is very strong, call 911.
Natural gas is colorless and odorless.
A chemical that smells like rotten eggs is added so you can smell a leak immediately. Teach everyone in your family to recognize the smell of a natural gas leak. Your gas fireplace - use it with proper ventilation Make sure the damper is open and ventilation is adequate when you use your fireplace. Have your chimney checked to make sure the flue is venting properly. If you install gas logs, the damper must be removed or permanently blocked open.