Tom's exactly right-on about that. I have the excess L-serine problem and have to use scents. I've learned to try a little on the hands before buying because once on the water I've had some so slippery the rod spun in the hand while cranking and retrieving fish, requiring an extra heavy grip. Of course it would be possible to let a rod get away :

It'll let a steering wheel get away too.
Ivory has no perfume, being a soap recommended for folks allergic to additives. It's used around here on catfish trot lines and jug lines. It doesn't hold up long enough on limb lines where waves constatnly come in.
It doesn't sound right, but a less slippery attractant is one I make. I barely melt lard not getting it too hot, then add some anise oil and crushed fresh garlic cloves, and pour it into a baby food jar. Once hardened again it makes a good attractant and hand scent masker. It wipes off the hands easily on pants leg, but doesn't help meet new ladies.
It can get a little expensive, so be conservative on the anise oil. Adding a little liquid Cod Liver oil can excite bass too. You mostly want lard, as that's the main old fashioned ingredient in soap, edible to fish, not too slippery. If you can't find lard or lamb suet at the grocery then Ivory will do as well. Any excess suet ought to be used to make up a fine pot of chili.
Jim