Propane is one of the safest, most efficient energy sources available to homes and businesses across Central Texas. Millions of households rely on it every day for heating, cooking, hot water, and backup power, and serious incidents are genuinely rare — especially with a well-maintained system. But rare doesn’t mean impossible, and knowing exactly how to respond if you ever smell gas is one of the most important pieces of safety knowledge any propane customer can have.
In its natural state, propane is completely odorless. To make leaks detectable, propane suppliers intentionally add a chemical called ethyl mercaptan before it’s delivered to your tank. This additive gives propane its distinctive smell, often described as similar to rotten eggs or sulfur, specifically so that even a very small leak is impossible to miss. If you ever catch that smell — near your tank, your gas lines, or an appliance — the right move is to treat it as a real leak immediately, not to wait and see if it fades.
Here is exactly what to do, step by step.
Immediate Actions to Take
The first few minutes after noticing a gas smell matter most. These steps are about minimizing risk right away, before anything else.
1. Do Not Do Anything That Could Cause a Spark
The very first thing to understand is that propane gas can ignite from even a small spark, and the goal in the first moments after noticing a smell is to avoid creating one. This means you should avoid:
- Turning any light switches, appliances, or electronics on or off
- Using a phone, doorbell, or garage door opener while inside or near the affected area
- Lighting a match, candle, lighter, or cigarette
- Starting a vehicle in an attached garage
Even small electrical switches can generate a spark large enough to ignite an accumulation of propane gas. If a device is already on, leave it on. If it’s off, leave it off.
2. Get Everyone Out of the Building or Area Immediately
Once you notice the smell, evacuate the building right away — this includes every person and every pet. Don’t pause to open windows, investigate where the smell might be coming from, or grab belongings on your way out. Every extra minute spent inside increases risk for no meaningful benefit. Move everyone to a safe distance away from the structure, well clear of where the smell is concentrated.
3. Shut Off the Gas Supply, If You Can Do So Safely
If your propane tank’s shutoff valve is located outside and you can reach it quickly without walking back through the smell or through the affected part of the building, turning it off can help stop the leak from getting worse. However, this step comes with an important condition: only do this if you’re completely confident you can do it safely and without hesitation.
If there’s any doubt at all about whether reaching the valve is safe, skip this step entirely. Getting everyone clear of the area always takes priority over trying to stop the leak yourself.
Getting Help and Staying Safe
Once you and everyone else are safely clear of the building, the focus shifts to getting professional help and staying out of harm’s way until the situation is resolved.
4. Call Your Propane Supplier or Emergency Services From a Safe Distance
Once everyone is safely away from the building, call for help. Depending on the situation, that may mean calling 911, your propane provider’s emergency line, or both. Do not go back inside the building to retrieve a phone — use a cell phone, or knock on a neighbor’s door, from a safe distance away.
Propane Plus maintains 24/7 emergency response coverage across Central Texas specifically for situations like this. You can reach our team anytime, day or night, at 512-259-7587.
5. Stay Away Until a Professional Confirms It’s Safe
This step trips people up more than any other on this list, because once the initial adrenaline wears off, it’s tempting to go back in — to check on the smell, look for the source yourself, or grab something you forgot. Don’t. Wait outside until a qualified technician has arrived, inspected the system, located the source of the leak, and explicitly confirmed that it’s safe to re-enter. Even if the smell seems to have faded, that doesn’t mean the leak has stopped or that gas hasn’t accumulated somewhere out of sight.
6. Don’t Attempt to Fix the Leak Yourself
Even if you have a strong suspicion about where the leak is coming from — a loose fitting, an aging connection, a valve that’s never quite closed all the way — resist the urge to fix it yourself, even temporarily. Propane systems require specialized tools, pressure testing equipment, and code-compliant repair techniques to be made safe again. This is a job for a licensed propane technician, every time.
Why This Matters More Than You Might Think
It’s worth saying clearly: propane leaks are uncommon, and systems that receive regular maintenance rarely develop them in the first place. But when a leak does happen, how you respond in those first few minutes matters far more than most people realize. A few minutes of caution — leaving switches alone, getting outside, calling for help, and staying out until you’re told it’s safe — costs you nothing. Assuming the smell will pass on its own, or deciding to “just quickly check” before leaving, is the kind of decision that turns a minor, manageable issue into a genuine emergency.
The single best protection against ever facing this situation is consistent, proactive maintenance. Systems that are inspected regularly are far less likely to develop leaks in the first place, and small issues are caught and corrected long before they become dangerous. You can learn more about what a routine inspection covers, and how often your system should be checked, on our propane tank maintenance page. It’s also worth familiarizing yourself with the broader set of signs that your propane tank may need attention — our guide on warning signs your propane tank needs attention covers everything from rust and corrosion to weak appliance flames, so you know what to watch for well before it ever reaches the point of smelling gas.
Emergency Propane Service in Central Texas
If you ever smell gas, don’t wait, don’t investigate, and don’t second-guess yourself — get everyone to safety first and call for help immediately. For a full overview of propane safety best practices and additional guidance beyond leak response, visit our Propane Safety page.
For non-emergency service, maintenance scheduling, or general questions about your propane system, request an appointment online and our team will get back to you promptly. We proudly serve homes and businesses across Central Texas, including Austin, Cedar Park, Georgetown, Leander, Round Rock, Burnet, and Bertram.