Turn off all stove knobs immediately, open all doors and windows to cross-ventilate, and leave the house if the gas smell is overpowering. Do not turn on any lights, fans, or appliances, and avoid using your phone indoors, as any electrical spark could trigger an explosion.
Leaving a gas stove on for hours is extremely dangerous and requires immediate action. The consequences depend on whether the flame was lit or if unburned gas was leaking.
If you left your gas stove on, act quickly to prevent a gas buildup or fire. Follow these steps immediately:
If You Don't Smell Gas, Relax, and Turn Off the Stove
If you left the stove on and don't smell gas, you may see a flame that has been burning the gas, preventing it from leaking into your home. In that case, turn off the stove. If you aren't 100% certain or are hard of smell, don't turn on your stove.
Yes, a gas stove can absolutely make you dizzy. This is typically caused by poor ventilation or a malfunctioning appliance, which can lead to indoor air pollution, a gas leak, or dangerous carbon monoxide (CO) buildup.
Symptoms of carbon monoxide poisoning include:
The term "silent killer gas" almost universally refers to Carbon Monoxide (CO). It is a colorless, odorless, and tasteless gas produced by the incomplete burning of fossil fuels (like wood, coal, propane, and gasoline). It is deadly because it replaces oxygen in your bloodstream, preventing vital organs from functioning.
Hissing or Whistling Sounds: Gas escaping a pipe under pressure often creates a hissing or whistling sound. The intensity depends on the size of the leak. Larger leaks might even produce a roaring sound. If you hear this, get out and don't hesitate!
To safely air out your house, open all windows and doors to allow cross-ventilation. A minimum of 30 minutes to 2 hours is generally enough to completely dissipate the gas. The exact time depends on how long the burner was left on and the size of your home.
Yes, a gas leak can make you sick. Inhaling natural gas reduces the amount of oxygen in the air, which can lead to poisoning or asphyxiation.
After 4–5 hours, heat buildup, food residue, or malfunctioning parts can increase the likelihood of overheating or fire especially if your oven is set to a high temperature. For gas ovens, even if no food is cooking, the continued gas emission increases the chance of carbon monoxide buildup or gas leaks.
A gas leak goes unnoticed for hours or even days if no one is home or awake to notice the signs. Small leaks escape slowly and make it harder to detect without regular checks. That's why simple habits like paying attention to strange odors or hissing noises protect a property from silent risk.
Turn off the burner completely, immediately open doors and windows to ventilate the space, and avoid turning on any electrical switches, lights, or appliances. A small amount of gas dissipates very quickly, but do not light a match or attempt to ignite the stove until the area is entirely aired out and the smell is completely gone.
The time it takes for gas to dissipate depends on the type of gas, the size of the spill or leak, and the level of ventilation.
If you smell gas inside your home or business:
You probably have a leak somewhere. You should have a shutoff valve where the gas pipe comes into your kitchen. Turn it off, open some windows, and see if the smell goes away.
How long does it take to get carbon monoxide poisoning? In high concentrations of carbon monoxide, it can take fewer than five minutes to get carbon monoxide poisoning. Under lower concentrations, it can take an hour to two hours to cause poisoning.
Carbon monoxide is called the silent killer. You can't see it or smell it, but it can make you very sick or even be deadly. This November, take simple steps to protect your home and family: Check your CO detectors, inspect appliances, and never use generators or fuel-burning tools indoors.
It is also a good idea to know the signs of a potential CO problem:
Immediate Steps If You Accidentally Left Your Gas Stove On
Yes, the smell of gasoline will eventually go away as the fuel evaporates. However, the scent can linger for days, weeks, or even months if the liquid has soaked into porous materials like carpets, upholstery, or concrete.
No, you should never sleep in a house with a known or suspected gas leak. Sleeping in these conditions poses severe and life-threatening risks due to suffocation, fire, and explosion.
No, a faint smell of gas is never considered completely normal or safe.
One of the most common early symptoms of carbon monoxide (CO) poisoning is a headache, often described as dull or persistent. Because CO is odorless and colorless, these early signs are frequently mistaken for the flu or food poisoning.
The NFPA reports an average of 125,000 residential gas leaks and 4,200 gas-ignited home fires annually. While this doesn't specify explosions, it suggests a frequent occurrence of gas incidents.