What are the symptoms of a small gas leak?

Author: Jamil Koss  |  Last update: Friday, July 3, 2026

Common symptoms include:
  • Breathing difficulties.
  • Dizziness.
  • Fatigue or drowsiness.
  • Feeling lightheaded.
  • Flu-like symptoms.
  • Headaches.
  • Irritation to the eyes and throat.
  • Mood changes, including depression.

Can a very small gas leak make you sick?

Can a slow gas leak make you sick? Yes, a slow gas leak can cause chronic health conditions, including respiratory problems and lethargy or fatigue.

What are the symptoms of a slight gas leak?

Symptoms from a natural gas leak may include:
  • headaches, sometimes severe.
  • dizziness.
  • fatigue.
  • nausea.
  • irregular breathing.
  • chest pains.
  • memory problems.
  • blurred vision.

Can you stay in a house with a small gas leak?

Legally yes, if there is a gas leak that is a danger to your health and safety and if the gas had to be shut off so you have no heat or hot water, that would make the property uninhabitable as a matter of law.

How long does it take for a gas leak to harm you?

Severe leaks can cause this problem in just five minutes. The EPA states that exposure to concentrations of nine ppm or more for eight hours is enough to produce harmful health effects for at-risk individuals. Exit the property and call 911 if you suspect your home has a gas leak.

How to detect a gas leak

How long can a small gas leak go unnoticed?

They can even go on for months undetected. But if there's a significant amount of gas escaping from your system, it can cause a spike in your gas bill.

What are two warning signs of carbon monoxide poisoning?

The most common symptoms of CO poisoning are headache, dizziness, weakness, upset stomach, vomiting, chest pain, and confusion. CO symptoms are often described as “flu-like.” If you breathe in a lot of CO, it can make you pass out or kill you.

Is a tiny gas leak ok?

Is a Small Gas Leak OK? There's no such thing as a safe gas leak. Although small amounts of natural gas are less dangerous than large amounts, even a small gas leak can build up to an unsafe level, especially in a small room with all the windows closed.

Is it safe to stay in a house after a gas leak?

For mild leaks, turn pilot lights off, open your windows, and contact your gas company. They'll tell you what to do and whether the gas meter needs to be turned off. If you're noticing symptoms or a strong odor, leave your home immediately. Remember that gas is volatile and can cause an explosion.

Will a carbon monoxide detector detect a gas leak?

No, carbon monoxide (CO) alarms cannot detect natural gas leaks. They are designed to detect the presence of carbon monoxide, a poisonous gas formed during incomplete combustion of fuels like oil, gas, propane, and wood.

Would a gas leak smell come and go?

Natural gas leaks are particularly likely to cause smells in small, enclosed areas where gas can build up. If the leak is outside, the smell may seem to come and go as the breeze blows it away. The other big sign to look out for is a strange noise.

How long to air out a house after a gas leak?

After your gas leak is fixed, your house might still have a strong gas smell. Now you can open your windows and doors to let your home air out. You want to air out your house for anywhere between 15 minutes and a few hours. Do not assume that all the gas has dissipated once the smell disappears.

How to test for gas leak in house?

Here are five ways you can check for gas leaks in your house:
  1. Check for a Sulfur or Rotten Egg Smell. ...
  2. Listen for a Whistling or Hissing Noise. ...
  3. Check the Stove or Range Top. ...
  4. Use a Gas Leak Detector. ...
  5. Conduct a Soapy Water Test.

How to fix a tiny gas leak?

Lining your gas pipes with epoxy will help seal the leaks. Once applied, let the epoxy hold and cure for approximately one hour. The reason you are using epoxy to seal the leaks is to avoid replacing the whole system. However, if you can replace the leaking pipe with a new one, do so to avoid future leaks.

Is there a device that can detect gas leaks?

The gas leak alarm sensor is like a superhero that can detect butane, methane, and any odd smells lurking around. And the best part? It talks! It's got voice prompt, so it can be like, "Hey, watch out!

What not to do after a gas leak?

DO NOT smoke, or make a spark or flame. DO NOT turn on any electrical switches, appliances or lights as an electrical charge could create a spark. DO NOT raise or lower the windows or use any phone inside your home. DO NOT open your garage door.

Can dogs smell gas leaks?

Clive Wynne, the director of the Canine Science Collaboratory at Arizona State University, said dogs can indeed detect gas — especially when mercaptan is present.

How long does a gas leak take to clear?

A gas leak typically clears anywhere from 30 minutes to a few hours, depending on ventilation and the severity of the leak. Repairing a gas leak may run as little as $120-$170. Serious gas leaks may cost thousands of dollars to repair if the plumbing company or gas company must excavate to get to the damaged pipe.

How urgent is a small gas leak?

If you smell a natural gas odor, hear the hissing sound of gas escaping or see other signs of a leak: IMMEDIATELY EVACUATE the area, and from a safe location either call 911 or SoCalGas at 1-800-427-2200.

Can a gas leak be minor?

Natural gas and propane have no odor. Civilians call us when they detect the odorant at levels below one part per million. This is the reason we get called to so many minor leaks, which is both a blessing and a curse for us. The blessing is we respond to and resolve the leak when it is far below dangerous levels.

What does a small gas leak smell like?

Rotten Egg Odors

Natural gas and propane have a distinctive smell for a reason. For safety purposes, utility companies use an additive called mercaptan that gives colorless and odorless gases a smell that is hard to miss. Most people describe this smell as something like rotten eggs, sewage, or sulfur.

How to detect carbon monoxide without a detector?

Signs of carbon monoxide:
  1. Stuffy or stale air.
  2. A pilot light keeps going out.
  3. More condensation than usual on your windows.
  4. Soot build up around a fireplace, chimney, or other fuel-burning equipment.
  5. Fuel-burning equipment has a back-draft (flame flares up when a window or door opens and adds air).

Can I call the fire department to check for carbon monoxide?

Yes, the fire department can check for carbon monoxide. If you suspect the presence of carbon monoxide in your home or building, it's essential to act quickly. Evacuate the area, ensure everyone's safety, and call your local emergency services or fire department.

How to detect carbon monoxide with iPhone?

Go to the Home app on your iPhone or iPad. , then tap Home Settings. Tap Safety & Security. Tap Sound Recognition, then turn on Smoke & CO Alarm.

Previous article
Does spraying water on plant leaves help?
Next article
Is it easy to restring blinds?