Natural gas does not have a smell on its own. To make leaks easier to detect, utility companies add a chemical called mercaptan, which creates a strong sulfur or rotten egg odor.
This smell is often the first and most noticeable sign of a gas leak. It may be stronger near appliances, gas lines, or your gas meter, but it can also spread throughout your home depending on airflow.
If you notice this smell, do not ignore it. Even a faint odor can indicate a leak. Leave your home right away, avoid using lights or electronics, and contact your gas company or a professional from a safe location outside.
