What is a common sign of a gas leak from a cylinder?

A strong odor or hissing sound is a common sign of a gas leak from a cylinder. Many non-flammable gases, such as natural gas or propane, are intentionally odorized to help individuals detect leaks easily since the gases themselves may lack a distinct smell. The hissing sound can indicate that gas is escaping under pressure from a compromised cylinder or valve. This immediate sensory alert allows for quick identification of a potentially hazardous situation, prompting necessary safety measures.

In general, recognizing these signs is crucial for maintaining safety in environments where compressed gases are used or stored. While excessive noise, heavy fog, or a change in temperature can occur under certain circumstances, they are not reliable indicators of gas leaks in the same way that an odor or hissing sound is.