Technically, natural gas does not have a smell. However, because a buildup of natural gas is dangerous, gas companies add a harmless chemical called mercaptan to give gas a detectable (and not very pleasant) odor.
Most people say mercaptan smells like rotten eggs or sulfur. At Getzschman Heating and Air Conditioning, we put safety first. Here is some information about gas leaks, their dangers, and what to do if you smell natural gas.
How to Identify a Gas Leak
Beyond the distinctive natural gas odor (rotten egg smell), you might notice:
- Hissing sounds near gas lines (indicating gas escaping under pressure)
- Dead or dying plants near gas lines (gas displacing oxygen to roots)
- Bubbling in standing water near gas line (gas forcing its way through liquid)
- Higher than normal gas bills (suggesting ongoing leaks)
Is Natural Gas Toxic?
Dangers of natural gas in your home include …
Asphyxiation Risk
Natural gas doesn't poison your body directly. Instead, it creates danger by displacing oxygen in the air. As gas fills a space:
- Less oxygen is available to breathe
- Your body receives decreased oxygen with each breath
- Organs begin to suffer from oxygen deprivation
Warning signs of asphyxiation include:
- Flu-like symptoms (weakness, nausea, headaches)
- Dizziness
- Breathing difficulties
- Chest pain
- Ringing in ears
Fire and Explosion Risk
Natural gas is highly flammable. Even a tiny spark can trigger ignition. Because of this danger, you must know how to respond to a natural gas leak.
What to Do If You Smell Natural Gas
Actions to Avoid
Don't Use Your Phone Inside
Even a cell phone can create a tiny electrical spark when connecting a call or sending signals to cell towers.
Don't Touch Electrical Switches
Flipping a light switch creates a small spark inside the switch plate that could ignite accumulated gas.
Don't Open or Close Windows
While ventilation might seem helpful, this action can:
- Create static electricity
- Change air pressure in ways that affect gas concentration Let emergency responders handle ventilation safely.
Actions to Take
If you smell a natural gas leak, you should:
Exit Immediately
- Gas accumulates from top to bottom in spaces
- Quick evacuation reduces exposure risk
Leave Doors Open As You Exit
- Helps emergency responders access the building
- Provides natural ventilation without forced air movement
Move to a Safe Distance
- Call 911 from outside
- Wait for emergency responders
- Contact your gas company
How To Protect Your Home From a Natural Gas Leak?
Standard carbon monoxide detectors won't detect natural gas. For complete protection:
- Install dedicated natural gas detectors
- Consider hybrid alarms that detect multiple gases
regular maintenance for gas appliances - Know where your gas shutoff valve is located
Professional Help When You Need It
At Getzschman Heating, we understand the importance of gas safety. Our certified technicians provide:
- Annual safety inspections
- Gas appliance maintenance
- Emergency response services
If you need help with gas appliances or want to schedule a safety inspection, call Getzschman at (402) 235-6727.
Remember: If you ever smell gas, evacuate first and call emergency services from a safe location. Are you noticing furnace odors other than natural gas? Learn when you should be concerned.