What should I do first if my house smells like gas?

Leave the building right away and take everyone with you. Do not flip light switches, unplug devices, or use a phone inside, since any spark is a risk. Once you are outside and clear of the home, call your gas utility's emergency line or 911. They will inspect for a leak at no charge. Do not go back in until they confirm it is safe.

Why does my house smell like rotten eggs but the gas company found no leak?

Natural gas has a sulfur scent added to it, and several harmless sources smell similar. The most common is a dried-out drain trap letting sewer gas into the room. Others include a loose toilet seal, a sump pit, sulfur in well water, or a water heater. Once a pro confirms no leak, that lingering sulfur odor is what we remove.

Can you remove a gas-like smell from my home?

We remove the lingering, non-gas odor that remains after your utility confirms there is no leak and the source is addressed. We are not a gas contractor and do not handle leaks or plumbing repairs. For sewer gas, sulfur, or a smell that has soaked into walls and floors, we use green, non-toxic treatments to clear it, usually in 1 to 4 hours.

House Smells Like Gas? Do This First, Then Clear Any Lingering Odor

Specialty · By Odor Removal Experts · Updated June 2026 · Cleveland and Northeast Ohio

If your house smells like gas, stop reading and act. Get everyone out of the building, do not flip any light switch, unplug anything, or use a phone inside, and once you are outside call your gas utility's emergency line or 911 right away. A natural gas or rotten egg smell can mean a real leak, and a leak is a life-safety emergency, not a cleaning problem. We are an odor removal company, not a gas contractor, so the very first move is always the utility, never us.

Only after a qualified technician inspects your home and confirms there is no leak should you think about a lingering smell that resembles gas. Sometimes the source is harmless, like sulfur gas backing up through a dried-out drain trap or a sewer line vent. That is the point where Odor Removal Experts can help homeowners across Greater Cleveland, Akron, Canton get the smell out for good with green, non-toxic methods.

The short answer

If your house smells like gas, treat it as an emergency. Get everyone out, do not flip switches, unplug anything, or use a phone inside, then call your gas utility's emergency line or 911 from outside. Only after a technician confirms there is no leak should you address a lingering sulfur smell, which often comes from a harmless source like a dried-out drain trap.

A gas or rotten egg smell is a life-safety emergency, not a cleaning job.
Leave, avoid any spark, and call the utility or 911 from outside first.
After a leak is ruled out, a dried drain trap is the most common cause.
We remove the lingering non-gas odor with green methods, never ozone.

What to do first when the house smells like gas

Treat a strong gas or rotten egg odor as an emergency until a professional tells you otherwise. Take these steps in order:

Leave immediately. Get everyone out of the building, including pets, and move away from the house.
Avoid anything that could spark. Do not turn lights on or off, unplug devices, start a car in an attached garage, or use a phone inside.
Call from a safe spot outside. Away from the house, call your local gas utility's 24-hour emergency number or dial 911; they respond fast, at no charge, with meters that detect gas your nose cannot pinpoint.
Wait for the all-clear. Let the utility shut off service and clear the home before anyone goes back inside.

Even a faint gas smell means call the utility

If the smell is faint and comes and goes, still err on the side of caution and call the utility. Natural gas is odorless, so providers add a sulfur-based scent called mercaptan specifically so people notice leaks. That rotten egg smell exists to make you act, so act.

When the smell is not actually a gas leak

Once the utility confirms no leak, the sulfur smell you noticed may come from somewhere else entirely. The most common culprit is a dried-out drain trap. A floor drain, a guest bathroom sink, or a basement utility sink that rarely gets used can lose the water seal in its P-trap, and sewer gas then rises straight into the room. The fix can be as simple as running water down the drain, though stubborn cases need more.

Other harmless sources carry a similar sulfur note that people often mistake for gas:

A cracked vent stack, a loose toilet seal, or a sump pit leaking sewer gas
Rotting food
A failing water heater anode rod
Certain well water

None of these are emergencies, but the smell can soak into drywall, cabinetry, and soft furnishings until the room feels permanently off. We do not diagnose plumbing or replace parts, that is a plumber's job. What we do is remove the odor that has settled into the building's surfaces after the source is handled, so the house actually smells clean again instead of just less bad.

How we clear a lingering, non-gas odor

Our work starts only after safety and the source are confirmed. We never mask a smell with fragrance, and we never use ozone or chlorine. Those approaches cover the problem or create new irritants, and ozone is not safe to run in an occupied home. Our methods are green and non-toxic from start to finish.

We find where the odor has collected, then break it down at the molecular level using enzymatic and oxidizing treatments, thermal fogging, and hydroxyl generators that are safe to run while you stay in the home. HEPA and activated-carbon air scrubbing pulls odor compounds out of the air, and we seal any porous surface that holds residue. For most homes the job runs 1 to 4 hours.

Because the smell can travel through ductwork and settle far from its source, we treat the affected zone as a whole rather than chasing one room. That is why a quick household trick often fails on a sulfur smell that has had weeks to spread.

Why a professional beats DIY for a stubborn sulfur smell

Store-bought sprays and plug-ins add scent on top of the problem, which is why the smell seems gone for an hour and then returns. A real fix removes the odor molecules instead of layering perfume over them. Vinegar, baking soda, and a fan help with mild cases, but a smell that has set into drywall, subfloor, or HVAC usually needs equipment most homeowners do not own.

We serve homeowners and businesses across Cleveland, Akron, Canton, Mansfield, Youngstown, and we offer same-day or next-day appointments in most of that area. Every job is backed by our guarantee: if the odor is not gone, we are not done.

We are fully insured, and we keep our promises simple. We do odor removal, not gas work or plumbing repair. When you need those, we will tell you so.