SCENARIO / 04 General guidance

You smell gas — what to do

No sparks, shut it off, open windows, get out — never switch anything electrical on or off

01 What to do now

  1. 01

    No sparks

    Don't turn any electrical device on or off (lights, fans, range hood, even your phone) — a single spark or static discharge can trigger an explosion

  2. 02

    Shut it off

    Immediately close the main gas valve or the cylinder valve to cut off the source

  3. 03

    Open windows

    Gently and slowly open windows to ventilate, letting the gas disperse naturally

  4. 04

    Get out

    Leave for a safe outdoor location, call your local emergency number to report it, and contact the gas company for inspection and repair

02 Common myths

  • Turning on the light to see better: this is the most common fatal mistake — the spark from a light switch is enough to ignite gas

  • Turning on the range hood to ventilate: the motor starting is also a spark source — equally forbidden

  • Using a lighter or candle to see: any open flame is absolutely forbidden

03 Sources

Original content reviewed:2026-08-27 · Content release:2026.10.01.1

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