Smell Gas Near a Stove or Furnace? What to Do Right Now

QUICK ANSWER: If you smell gas — a rotten-egg or sulfur odor — near a stove, furnace, or anywhere in your home, treat it as a serious emergency. Do not flip any light switches, use any electronics or phones, light a flame, or do anything that could create a spark. Get everyone, including pets, out of the house immediately. Do not try to find the leak yourself. Once you're safely outside and away from the home, call your gas company's emergency line or 911. Don't go back inside until professionals say it's safe. A natural gas leak is a fire and explosion hazard, so the priority is getting out fast and calling for help from a safe distance.

The smell of gas in your home is one of those situations where knowing exactly what to do — and what not to do — matters enormously. Natural gas leaks pose a real fire and explosion hazard, so the right response is fast, simple, and focused on getting everyone to safety. Here's what to do right now if you smell gas near your stove, furnace, or anywhere in the house.

Recognize the Smell

Natural gas is naturally odorless, so gas companies add a distinctive smell — described as rotten eggs or sulfur — specifically so leaks can be detected. If you notice a rotten-egg or sulfur odor near your stove, furnace, water heater, or anywhere in your home, treat it as a potential gas leak. You might also hear a hissing sound near a gas appliance or line. Trust the smell: it's there as a warning, and a gas leak is not something to second-guess or investigate casually. The moment you suspect gas, shift into safety mode.

Do Not Create Any Spark

This is the most critical part, because a gas leak can be ignited by the smallest spark. Do not do anything that could create a spark or flame. That means: don't flip light switches on or off, don't use any electrical devices or appliances, don't use your phone inside the house, don't light a match or lighter, don't start a vehicle in an attached garage, and don't do anything that produces a spark or flame. Even small electrical actions can ignite gas. The instinct to turn on a light or grab your phone is exactly what to resist. Leave everything as it is and get out.

Do NOT Why
Flip light switches Can create a spark that ignites gas
Use electronics or phones inside Risk of spark
Light a flame, match, or lighter Direct ignition source
Try to find the leak yourself Wastes critical time; dangerous
Go back inside until cleared Risk remains until professionals check

Get Everyone Out Immediately

The priority is getting everyone to safety. Leave the house right away, taking everyone with you — family members and pets. Don't stop to gather belongings or investigate. Just get out. Leave doors open as you go if it's quick and natural to do so, but the main thing is to exit promptly. Get well away from the house to a safe distance, since the hazard is the building itself. Your safety and your family's safety come before anything else, including the house or your possessions. Once everyone is out and at a safe distance, you can take the next step.

Call for Help From Outside

Once you're safely outside and away from the home, call for help — but from outside, not from within the house, since using a phone indoors risks a spark. From a safe distance, call your gas company's emergency line or 911. Report that you smell gas and follow their instructions. They will dispatch professionals to handle the situation safely. Do not go back inside the house for any reason until the gas company or emergency responders tell you it's safe to do so. Even if the smell seems to fade, the danger may remain until professionals have checked and cleared the home.

WARNING: A natural gas leak is a fire and explosion hazard. If you smell gas, do not flip switches, use electronics or phones inside, or create any spark or flame. Get everyone and pets out of the house immediately, and call your gas company's emergency line or 911 from a safe distance outside. Don't go back in until professionals say it's safe. When in doubt, get out and call for help.

Why You Shouldn't Investigate Yourself

It's tempting to try to find the source — check if a burner was left on, sniff around the furnace — but this is exactly what not to do. Searching for a gas leak wastes precious time and puts you in danger near the gas, and the actions involved in investigating can themselves create a spark. Locating and fixing a gas leak is a job for the professionals with the right training and equipment. Your job is simply to get out and call for help; theirs is to safely find and address the leak. After the gas company has made the situation safe, a qualified professional can repair the source of the leak — whether it's a stove connection, a furnace, a water heater, or a gas line — but that comes after the emergency response, not during it.

Frequently Asked Questions

What does a gas leak smell like?
Natural gas is odorless on its own, so gas companies add a distinctive rotten-egg or sulfur smell so leaks can be detected. If you notice an odor near your stove, furnace, water heater, or anywhere in your home, treat it as a potential gas leak. You might also hear a hissing sound near a gas appliance or line. The added smell is a warning sign meant to be taken seriously.
What should I do first if I smell gas?
Do not create any spark — don't flip light switches, use electronics or phones inside, or light a flame. Get everyone, including pets, out of the house immediately without stopping to investigate or gather belongings. Once you're safely outside and away from the home, call your gas company's emergency line or 911. The priority is getting out fast and calling for help from a safe distance.
Why can't I turn on a light or use my phone?
Because a gas leak can be ignited by the smallest spark, and flipping a switch or using an electronic device can create one. Even small electrical actions can ignite leaked gas, causing a fire or explosion. That's why you should avoid any electrical action inside and leave everything as it is — get out of the house and only use your phone once you're safely outside.
Should I try to find the gas leak myself?
No. Searching for the leak wastes critical time, puts you in danger near the gas, and the actions involved can create a spark. Locating and fixing a gas leak is a job for professionals with the right training and equipment. Your job is to get everyone out and call your gas company or 911 from outside; theirs is to safely find and address the leak.
When is it safe to go back inside?
Not until the gas company or emergency responders tell you it's safe. Even if the smell seems to fade, the danger may remain until professionals have checked and cleared the home. Don't go back inside for any reason — to grab belongings, check appliances, or anything else — until you've been given the all-clear by the professionals handling the situation.
Who fixes a gas leak after the emergency?
After the gas company has made the situation safe, a qualified professional can repair the source of the leak, whether it's a stove connection, furnace, water heater, or gas line. This repair comes after the emergency response, not during it. The emergency responders or gas company handle making the home safe first; the actual repair of the leaking appliance or line is done by a qualified pro afterward.

When in Doubt, Get Out and Call

If you smell gas near a stove, furnace, or anywhere in your home, the response is simple and urgent: don't create any spark, get everyone and your pets out immediately, and call your gas company or 911 from a safe distance outside. Don't investigate the leak or go back inside until professionals clear it. A gas leak is a serious fire and explosion hazard, so acting fast and getting to safety is always the right call.

After a gas leak has been made safe, need the source repaired — Get a qualified plumber to repair the stove, furnace, water heater, or gas line connection. Much Better Plumbing serves Las Vegas and Clark County Call (702) 613-8452.