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Safety card

You smell gas

The short answer

Leave now and call from outside. Don’t flip switches, use a phone inside, or try to find the leak. Only the gas utility or a qualified pro turns the gas back on.

Get out firstNatural gas has an added rotten-egg smell so you notice a leak. Any spark can ignite it: switches, phones, doorbells, garage-door openers, starting a car.

Know your shutoffs

Gas shutoffAt the gas meter outside (a valve on the pipe before the meter), and a smaller shutoff valve on the gas line next to each appliance.

Related

Your carbon monoxide alarm is soundingHot water smells like rotten eggsFurnace not turning on

Written from

Original casaq guidance, updated 2026-10-05. General guidance, not a diagnosis; licensed-pro review pending. Severity levels: Emergency now / Today / This week / This month / Watch. Send a correction.

Emergency now

You smell gas

Leave first. Call from outside.

Do this right now
  1. Get everyone out, nowLeave the door open behind you. Pets too, if it is quick.
  2. Don't make a sparkNo light switches, appliances, lighters, phones or starting a car in the garage until you are outside and away.
  3. Call from a safe distanceYour gas utility's emergency line, or 911.

Do not go back in until the utility or fire department says it is safe. If the gas was shut off, only the utility or a qualified professional turns it back on.

Call 911
casaq triage library · general guidance, not a diagnosis · licensed-pro review pendingCorrections