I know that some guys put garlic scent to every lure and bait when fishing the ole’ miss for sauger/walleye, but I don’t see them clearly out fishing other anglers. I don’t believe that salt/garlic would cause a walleye to strike a bait itself, but possibly the fish would hold the bait longer discerning whether or not its edible. Using spray on scents to cover up the smell of gas, oil, and other foreign smells that get transfered from your hand onto baits seems worthwhile though.