What does it mean if your house smells like gas?
Signs of a Natural Gas Leak While natural gas is odorless, colorless and tasteless, utility companies add a sulfur-like odor to the gas that enters your home so you have an effective way to detect a leak. If you smell rotten eggs with no apparent source, it could mean you have a gas leak.
Why does my house smell like gas but no gas leak?
Sulfur is often the cause of a gas smell in homes without gas leaks. It smells identical to the foul rotten odor of gas leaks, but it's not nearly as harmful in this case. Bacteria found in sewage systems or your kitchen sink release sulfur over time, causing the smell to permeate your home.