Gas Smell in the Kitchen
What to Do, Leak Detectors & Auto Shut-Off

If you smell gas right now

1. Turn off the gas at the cylinder valve, or the isolation valve if the supply is piped.
2. Do not switch any light, fan or appliance on or off, and do not unplug anything; a spark can ignite gas.
3. Put out any flame, including candles, joss sticks and cigarettes.
4. Open doors and windows to let the gas disperse.
5. Get everyone, including pets, out of the kitchen and away from the smell.
6. Call for help from outside, well away from the smell.
7. Do not use the cooker again until the leak has been found and the system has been checked.

ClickBina’s gas piping guide gives the same short response every household should know: shut the cylinder or isolation valve, do not touch any electrical switch or naked flame, ventilate, and get the system checked before using it again. If the smell is strong, does not fade after the gas is turned off, or you cannot reach the valve safely, leave the house and call the fire and rescue department (Bomba) from outside.

What not to do

• Do not search for the leak with a match or a lighter.
• Do not switch on the exhaust fan or the cooker hood; their motors can spark.
• Do not ring the doorbell or use an intercom inside the smell.
• Do not keep cooking because the smell seems faint.
• Do not re-light a burner until the cause is known.

Why you can smell gas at all

LPG and natural gas have almost no smell of their own. A strong-smelling odorant, mercaptan, is added so that a leak is noticed; the gas piping guide calls that smell the first warning. The two fuels also behave differently when they escape:

That is why LPG is dangerous in low, enclosed spaces such as a closed cabinet under the hob, and why the position of a detector depends on which gas you use.

Where kitchen gas leaks come from

Checking a hose or connection safely

With the gas on and nothing lit, brush a little soapy water over the hose ends, the clamps and the regulator joint. Bubbles that grow show a leak. Never use a flame to test for gas. If you find bubbles, turn the gas off at the cylinder and have the part replaced; a leaking joint on fixed piping is a job for a gas fitter, not a DIY repair.

Gas leak detectors: where and which

A gas detector sounds an alarm when gas builds up, often before you would notice the smell, and it works while you are asleep or out of the room. The gas piping guide explains the rule for placement: LPG detectors sit low because the gas pools at floor level; natural gas detectors sit high because it rises. Choose a detector made for your gas type, mount it near the cooker and the cylinder but not directly above the burners where cooking fumes cause false alarms, and test it regularly using its test button.

• Plug-in or battery units are easy to fit in a home kitchen.
• Hard-wired detectors can be linked to an alarm or to an automatic shut-off valve.
• Commercial kitchens usually have gas detection linked to a shut-off, as the gas piping guide notes.

Automatic shut-off valves

A detector only warns. An automatic shut-off goes further: a solenoid valve on the gas supply closes when the linked detector senses gas, so the supply stops even if nobody is home. The gas piping guide lists gas detection linked to a solenoid cut-off as a common feature of F&B kitchens, and it can be fitted in homes with a fixed gas supply. Timer valves, which close the gas after a set cooking time, are another option for households where a burner is sometimes left on. Any valve on the gas line must be fitted and leak-tested by a competent gas fitter.

Cylinder, cabinet and ventilation at home

• Keep the cylinder upright, on a firm base, away from the hob’s heat and out of direct sun.
• If it lives in a cabinet, the cabinet needs ventilation so leaking gas can escape, not a sealed box.
• Keep the hose short, clear of hot surfaces and free of kinks.
• Turn the cylinder valve off when you go away for a long time.

The gas piping guide notes that the flexible connector at the appliance has a service life and should be replaced periodically rather than left indefinitely. A hardened or cracked hose is the single most common cause of a kitchen gas smell. If the kitchen also needs better ventilation, our exhaust fan guide and hood and hob guide cover the options.

Who should fix a gas leak

Swapping a rubber hose and regulator on a cylinder cooker is routine, but anything on fixed gas piping, a change of appliance position or a new gas point is gas work, and gas work is regulated. The gas piping guide explains that piped gas falls under the Energy Commission (Suruhanjaya Tenaga) framework, that the person who runs the pipe and commissions the system should be a competent, trained gas fitter, and that every job ends with a leak test. Ask for the test result in writing. For an outdoor kitchen with a gas point, our outdoor kitchen guide explains what to plan.

What it costs

These figures are published on ClickBina’s gas piping guide (market estimate, Klang Valley).

Detectors and shut-off valves are priced by model. A simple plug-in detector is a small cost next to the risk it covers.

How ClickBina can help

Gas work is not one of ClickBina’s own listed trades, so we do not carry out gas repairs ourselves. If you smell gas now, follow the steps at the top of this page first. For a planned check, a new hose and regulator, a detector or a kitchen renovation that moves the hob, WhatsApp us your job details for a quote. We reply within the hour; ClickBina handles whole-house refurbishment and coordinates the trades on one job, with a flat price, no hidden charges, and a site visit of RM150, waived if you go ahead.

Sources & methodology

• ClickBina gas piping installation guide — LPG vs natural gas behaviour, detector placement, odorant, the leak response, flexible connector service life, regulation and prices.
• ClickBina exhaust fan and kitchen hood guides — kitchen ventilation.

Pricing note: prices are indicative Klang Valley market figures quoted from ClickBina’s gas piping guide.