What does bio diesel smell like?

Biodiesel has a distinctive odor that is often described as being similar to that of cooking oil or fried food, particularly when it is made from vegetable oils. The smell can vary depending on the feedstock used; for example, biodiesel made from soybeans may have a more earthy scent, while that made from used cooking oil can have a stronger, more pungent aroma. Overall, many people find the smell of biodiesel to be less offensive compared to traditional diesel.