A fishes ability to smell is more acute than a bloodhounds. Petroleum smells, among many others, are proven to repel fish.
In the old days ( 1980's ) if I overheated a cup of plastic ( for worms ) there appeared to me to be a noticeable difference in strikes; even with strong attractant use. Gas on your hands was a big no no. I carried a small bottle of my wife's strawberry smelling shampoo and washed my hands right before "blastoff".