Natural gas is odorless and tasteless. To make sure you know when there’s a gas leak, we add a harmless gas called mercaptan to give it a rotten-egg smell.
Although natural gas isn’t toxic, it is highly flammable. If you suspect a leak:
Smoke alarms and carbon monoxide (CO) alarms won’t detect a natural gas leak. Only a natural gas alarm or combined natural gas/CO alarm will be set off if there’s a leak.
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