gas leak
Refers to the escape of gas from a pipe, appliance, or container. Commonly used in safety warnings and incident reports.
If you smell a gas leak, please open the windows immediately.
昨夜、近所でガス漏れ事故があった。
There was a gas leak accident in the neighborhood last night.
Compound of ガス (gas, from Dutch 'gas') and 漏れ (leak, the noun form of 漏れる 'to leak').