In the world of scents ,the shall we say scientific way to decide if one is good or not to ketch fish with here is what a bait/scent manufacturer told me about how he developed a well known scent brand he sells today .
think about it in this type of scenario
1 ...there is positive scent , fish go to it and inspect it and it ATTRACTS them
2 ...there is neutral scent , fish dont have a noticeable reaction to it either way
3 ...there is negative scent , fish avoid it and dont care for it .
some of the things fish smell in the water that they like amazes me , my wife about got pulled of the dock the other day goofing around and putting some of the kids strawberry twizzler on her hook ! we never saw what goliath hit it but to be sure it almost broke some tackle before it escaped . i think it was likely a big carp but to be sure it liked it strawberry scented sugary candy
Remember Fle Fly lure flavor ? aka :bubblegum" it works , i know for sure .
And Slab sauce in the garlic version , good stuff right there .
fish have nostrils and they use them for sure