Which gas is often considered a non-toxic alternative to natural gas?

Propane is often considered a non-toxic alternative to natural gas due to its properties and safety profile. While it is derived from natural gas processing and petroleum refining, propane burns cleanly and emits fewer pollutants compared to other fossil fuels. It is non-toxic, making it safer in various applications, including residential heating and cooking.

Hydrogen, although a clean energy carrier and non-toxic, is not typically used as a direct substitute for natural gas in residential applications due to its storage and infrastructure challenges. Methane is actually the primary component of natural gas, meaning it has similar toxicity concerns. Butane also poses some toxicity risks and is generally used for specific applications rather than as a direct alternative to natural gas in everyday usage.