What to Do If You Smell Gas in Your Home (Step-by-Step Guide)

What to Do If You Smell Gas

If you smell gas in your home, it’s important to act immediately. Even a small leak can be dangerous. Stay calm, leave the property safely, and follow the steps below to protect yourself and your household.

1. Turn off your gas supply if it’s safe to do so
2. Open doors and windows to ventilate the area
3. Do not use electrical switches or appliances
4. Do not light matches or use naked flames
5. Leave the property immediately
6. Call the National Gas Emergency Service (0800 111 999)

If you're a British Sign Language (BSL) user, you can use Convo to contact the National Gas Emergency Service free of charge. For more information on communication support for people with hearing or speech impairment, visit Relay UK.

What Does a Gas Leak Smell Like?

Often described as a sulphur or “rotten egg” smell

Gas is naturally odourless — a smell is added for safety

The smell may be stronger near appliances or pipework

Signs You May Have a Gas Leak

  • A strong smell of gas inside the property
  • Hissing sounds near pipes or appliances
  • Pilot lights going out unexpectedly
  • Physical symptoms such as dizziness, nausea, or headaches

What NOT to Do If You Smell Gas

  • Don’t switch lights or electrical devices on or off
  • Don’t use mobile phones inside the property
  • Don’t try to locate or fix the leak yourself
  • Don’t stay inside longer than necessary

Who Should You Call for a Gas Leak in the UK?

First, call the National Gas Emergency Service on 0800 111 999 - they will make the situation safe. Then, contact a qualified Gas Safe registered engineer who will then carry out necessary repairs.

Gas Engineer in Stockport

If you’re based in Stockport or nearby areas, G Leigh Gas Services can quickly identify and resolve gas-related issues.

We provide:

  • Gas leak detection and repairs
  • Boiler and appliance safety checks
  • Fast, reliable local callouts

Smelling gas in your home should never be ignored. Acting quickly and following the correct steps can prevent serious danger.

If you need a qualified gas engineer after a gas leak, G Leigh Gas Services is here to provide fast, safe, and reliable support.

Gas Safety FAQs

What does a gas leak smell like in the UK?

Gas is given a sulphur-like, “rotten egg” smell, so leaks can be easily detected. The smell may be stronger near appliances or pipework.

Who do I call if I smell gas in the UK?

Call the National Gas Emergency Service on 0800 111 999 immediately. They are available 24/7 and will make the situation safe.

Is a gas leak dangerous?

Yes, gas leaks can be extremely dangerous and should always be treated as an emergency due to the risk of fire, explosion, or health issues.

Can I fix a gas leak myself?

No, gas work should only be carried out by a qualified Gas Safe registered engineer to ensure safety and compliance.

Should I turn off the gas at the meter?

If it’s safe to do so, turning off the gas supply can help reduce risk. However, your priority should always be to leave the property and call emergency services.