Might want to think... scent and action</u>? [:I]
Keep in mind a "bad" scent is worse than any good action on your bait!
If I could find a small sardine to rig in an anchovy or a herring teaser head, I would do that in a heartbeat! Don't forget you are talking about something that can smell it's way back to its natal river all the way across the Pacific? (Yes, that has been proven!)
Here are some of the scents salmon like “Good Scents”: (And, no I don't know them all, but these are the ones I know have been tested)
Shrimp
Crawfish
Anise
Herring
Garlic
Shad
Smelt
Salmon Egg
Anchovy
Krill
Sardine
White Corn
There are thoughts that Chinook salmon prefers a mixture of Sardine and Garlic. I will not argue that.
Here are some of the scents Salmon DO NOT like “Bad Scents”:
L-serine amino acid (this something we produce... sorry we all do and to a salmon, we stink!)
Oil
Onions
Gasoline
Fried Chicken
Cigarettes
Potato Chips
Insect Repellents
Some Hand Lotions
Pepper
I do use scents to mask my scent, but remember some scents contain profiles that appeal to fish and can trigger feeding behaviors. In any case, if you handle any of the “Bad Scents”, wash your hands with some old good “Lemon Joy” to remove the offensive odors; that is, if you want to catch any fish the rest of the day.
If you are using WD-40 as an attractant, you probably should not. WD-40 main ingredient is Hexane (50%), followed by 25% Liquefied petroleum gas, 15% Mineral oil, 10% Inert ingredients. It does not contain "fish oil"! I quote, "It further lists flammability and effects to the human skin when repeatedly exposed to WD-40 as risks when using WD-40. Nitrile rubber gloves and safety glasses should be used." (And, yes I do use WD-40 on my gear! But, do not use it as an attractant, anymore.)
Oh... BTW I have been known to take "Needlefish" right out of a salmon's belly and use it as bait! And, I do prefer 5" year around. The only exception to 5" Anchovies, is when I fish Cut Plug Herring, then I like that larger and prefer getting it live!