What is an odourless gaseous alkane?

An odourless gaseous alkane is a type of hydrocarbon that consists solely of carbon and hydrogen atoms, arranged in a chain or branched structure, and is typically found in a gaseous state at room temperature. The simplest example of an odourless gaseous alkane is methane (CH₄), which is the primary component of natural gas. Alkanes are saturated hydrocarbons, meaning they contain only single bonds between carbon atoms. Other examples of gaseous alkanes include ethane (C₂H₆) and propane (C₃H₈), which are also colourless and odourless.