Gas Stove Left On: What to Do in an Emergency

Last updated on September 15th, 2025

Never leave a gas stove on, whether lit or unlit. A lit stove produces deadly carbon monoxide in enclosed spaces. An unlit stove releases flammable gas that can explode. Both situations require immediate action to protect your health and safety.

What to Know

Q: Is it safe to leave a gas stove on for an hour?
A: No. Even 30 minutes is dangerous.

Q: What’s more dangerous – flame on or off?
A: Flame off (unlit) is more immediately dangerous due to explosion risk.

Q: Should I open windows if I smell gas?
A: No. Evacuate first, then let professionals handle ventilation.

Q: How long before I can re-enter after a gas leak?
A: Wait for emergency responders to clear your home. Never decide this yourself.

Two Emergency Scenarios: Know the Difference

Scenario	Gas Stove ON with Flame	Gas Stove ON without Flame
Primary Danger	Carbon monoxide poisoning	Gas explosion
Warning Signs	Headache, dizziness, nausea	Rotten egg smell
Time to Act	Immediately	Immediately (more urgent)
Can Ignite Electrical Items?	No	Yes – any spark can cause explosion

EMERGENCY: Gas Stove On WITH Flame 🔥

What’s Happening

Your stove is burning gas and producing carbon monoxide (CO). This invisible, odorless gas displaces oxygen and can kill you without warning.

Immediate Steps (Do These Right Now)

1. Turn off the stove – Stop the source immediately
2. Turn on exhaust fan to highest setting
3. Get everyone out – People and pets, no exceptions
4. Open all windows and doors – Create airflow
5. Go outside frequently – Get fresh air every few minutes
6. Do NOT light anything – No matches, lighters, candles

When to Call 911

• Anyone feels dizzy, nauseous, or has a headache
• Someone becomes unconscious
• You’ve been exposed for more than 30 minutes

EXTREME EMERGENCY: Gas Stove On WITHOUT Flame ⚡

What’s Happening

Raw gas is filling your home. Natural gas is highly explosive when it reaches 5-15% of the air volume. Any tiny spark can cause a catastrophic explosion.

Critical Steps (Follow Exactly)

1. DO NOT TOUCH ANYTHING ELECTRICAL – No light switches, phones, garage doors
2. GET OUT IMMEDIATELY – Take family and pets
3. DO NOT OPEN WINDOWS – This can increase danger
4. Call 911 from outside – Use a neighbor’s phone or cell phone from across the street
5. Do not start your car – Even in the driveway
6. Wait for professionals – Only they can determine when it’s safe

⚠️ NEVER DO THESE DURING A GAS LEAK
Electrical	Light switches, appliances, phones, garage doors
Ignition	Matches, lighters, cigarettes, pilot lights
Windows	Opening or closing (can create static electricity)
Vehicles	Starting cars, motorcycles, lawn mowers

Health Dangers You Need to Know

Carbon Monoxide Poisoning

Carbon monoxide binds to your blood 200 times more easily than oxygen. Even low levels can cause permanent brain damage.

Early symptoms:

• Headache (most common first sign)
• Dizziness
• Nausea
• Fatigue
• Confusion

Severe symptoms:

• Chest pain
• Difficulty breathing
• Loss of consciousness
• Death

Natural Gas Exposure

Natural gas isn’t toxic like carbon monoxide, but high concentrations can cause:

• Irregular breathing
• Oxygen displacement (suffocation)
• Headaches and dizziness
• Memory problems

Gas Dissipation Times

Gas Type	Natural Dissipation Time	Safe Re-entry
Natural Gas	~1 hour outdoors	Only after professional clearance
Propane (LPG)	~2 hours outdoors	Only after professional clearance

Important: These times apply to outdoor, well-ventilated areas. Indoor gas takes much longer to dissipate safely.

Prevention: Essential Safety Measures

Must-Have Safety Equipment

1. Carbon monoxide detector – Install within 15 feet of your stove
2. Natural gas detector – Detects gas leaks before you smell them
3. Fire extinguisher – Class B for gas fires
4. Smoke alarm – Within 10 feet of kitchen

Smart Technology Options

• Automatic shut-off valves – Cut gas flow when leaks detected
• Smart stove knobs – Send phone alerts if gas is left on
• Smart gas detectors – Connect to your phone for remote monitoring

Daily Safety Habits

• Never leave cooking unattended
• Check that knobs are fully off after cooking
• Keep stove area clean and clear
• Use proper cookware that covers burners completely
• Have gas appliances inspected annually

When to Call Professionals

Call 911 Immediately If:

• You smell gas and can’t find the source
• Anyone shows signs of gas poisoning
• You hear hissing from gas lines
• You see damaged gas connections

Call Your Gas Company If:

• You smell gas outside your home
• Your gas bill suddenly increases
• Appliances aren’t working properly
• You need a safety inspection

Call a Licensed Technician For:

• Annual appliance inspections
• Any repairs or installations
• Converting between gas types
• Installing safety equipment

First Aid for Gas Exposure

If Someone Is Conscious:

1. Get them to fresh air immediately
2. Have them sit down and rest
3. Loosen tight clothing
4. Call 911 if symptoms persist
5. Monitor breathing and consciousness

If Someone Is Unconscious:

1. Call 911 immediately
2. Move them to fresh air if safe to do so
3. Check for breathing and pulse
4. Begin CPR if trained and necessary
5. Keep them warm until help arrives

Never delay calling emergency services to provide first aid.

Using a Gas Stove Safety Tips

If you use a natural gas stove in your house, the advice and safety suggestions listed below will help you keep as safe as you can.

• Having your gas appliances examined annually is a great idea.
• Install a carbon monoxide detector.
• When using the gas stove, always turn on the exhaust vent.
• Use only pots and pans that completely enclose the stove burner. Never allow an open flame to reach the sides of a pot or pan.
• To prevent a fire hazard, never use cookware with handles or other combustible materials.
• Away from the stove in the kitchen, keep items like oven mitts.
• Never cook while wearing loose clothing, dangling jewelry, scarves, or anything else that could catch fire from the flame of the stove.
• When cooking, never leave a gas stove alone.
• Install a smoke alarm correctly close by.
• Use safety knobs on your gas stove to assist protect young children and/or the elderly.
• Clean the top of the stove after each use once the burners have cooled (small food particles can catch on fire).
• At least once a week, wash the grates and each burner cap of your gas stove by immersing them in warm, soapy water. Clear out any debris from the burner’s openings using a toothpick.
• NEVER put water on a fire in a gas stove. Put a lid on the pot and turn off the burner if there is only a small fire in the pot. If the fire is larger, you can put it out using a fire extinguisher, a fire suppression blanket, a wet cloth, or a ton of salt or baking soda.
• If you smell natural gas but did not leave the stove on, get out of the house right away. Use your mobile device to call 911 or your neighborhood gas company from a safe distance outdoors and outside in the fresh air to report the event.
• Read the safety instructions that come with your natural gas appliance. You can get in touch with the manufacturer or look it up online if you don’t have the printed handbook.

Always Play it Safe!

Gas stove safety isn’t complicated, but the consequences of mistakes can be deadly.

Recognize the two main dangers – carbon monoxide from burning gas and explosion risk from unburned gas – and responding appropriately to each.

When in doubt, evacuate and call professionals. Your life is worth more than any inconvenience or cost. Gas emergencies can escalate from minor to catastrophic in minutes, so always err on the side of caution.

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