A strong smell of gasoline at a crime scene is an example of which type of evidence?

A strong smell of gasoline at a crime scene is considered transient evidence. This type of evidence is characterized by its temporary nature; it can easily change or disappear over time. In this case, the smell of gasoline can dissipate or be altered by environmental factors, such as wind or rain, making it crucial to document it quickly.

Transient evidence often includes sensory perceptions—like odors, temperatures, or sounds—that can indicate the presence of specific substances or conditions at the scene. It plays an important role in the initial assessment of a crime scene and can guide investigators toward making further inquiries about potential activities or the occurrence of a crime. Understanding this category emphasizes the need for forensic professionals to be meticulous in their observations and documentation during a crime scene investigation.