UGI Energy to do more Rotten Egg Smell? It could be a gas leak. The odor of Mercaptan, a chemical that's added to natural gas to make it detectable, could be the first sign of a gas leak. Be a hero-keep your family safe with these tips. > LEAVE immediately, taking everyone (including pets) with you. DO NOT use electronics such as phones, computers, appliances, or lamps. > LEAVE the door open behind you. > CALL UGI's 24/7 emergency line at DO NOT use fire such as a lighter, match, or pilot light. 1.800.276.2722 or 911 from a safe distance where you can no longer smell gas. > DO NOT use vehicles or powered equipment if you smell gas. > CALL 911 immediately from a safe distance if you hear or see natural gas blowing anywhere. > DO NOT use email or social media to contact UGI-CALL instead. > DO NOT reenter the building until a UGI technician has inspected it. Protect Your Family Call 800-276-2722 or visit www.UGI.com to learn more. UGI Energy to do more Rotten Egg Smell? It could be a gas leak. The odor of Mercaptan, a chemical that's added to natural gas to make it detectable, could be the first sign of a gas leak. Be a hero-keep your family safe with these tips. > LEAVE immediately, taking everyone (including pets) with you. DO NOT use electronics such as phones, computers, appliances, or lamps. > LEAVE the door open behind you. > CALL UGI's 24/7 emergency line at DO NOT use fire such as a lighter, match, or pilot light. 1.800.276.2722 or 911 from a safe distance where you can no longer smell gas. > DO NOT use vehicles or powered equipment if you smell gas. > CALL 911 immediately from a safe distance if you hear or see natural gas blowing anywhere. > DO NOT use email or social media to contact UGI-CALL instead. > DO NOT reenter the building until a UGI technician has inspected it. Protect Your Family Call 800-276-2722 or visit www.UGI.com to learn more.