The Gas Has Already Been Turned Off, But There Is Still a Smell

Should a smell persist even after the gas is shut off, it likely indicates a leak.

A detectable odor near the gas switch often points to a leakage at the valve or the rubber junction of the gas pipe. It is recommended to replace the gas valve in such instances.

Also, if the rubber appears aged, replacing it timely is essential. Under these circumstances, the gas cylinder itself is usually not the issue and can generally be discounted.