 Fishing for kokanee, there's scents to put in a scent chamber. Fishing for bass, there's stuff that smells like crayfish. And a little tip is the crayfish one works real well for trout, too. If I was going to buy one scent, it would be crayfish. But there's other scents to help mask those smells that you may have. It's just a thing to help you when you're fishing. And typically what I'll do is when I'm fishing, if I'm catching fish like crazy, I don't worry about scents.