Before the stores were filled with hunting products, I did try Apple and other scented shampoo's. I have also put apple and onion slices in with my cloths and have used apple slices as cover scent in my tree stands. What I've learned from these experiences? Bee's love apples! I don't know how a deer interperets apple shampoo smell but insects like bee's like it.
I made the mistake of leaving apple slices in a tree stand one time and a friend of mine was the next to use the stand. He climbed up and came right back down because bee's had swarmed my apples. Bee's aren't the only criitter's that like apples either. If you are in bear territory and hunting from a tree stand, might want to skip the apple shampoo and food type cover scent unless you want them IN your stand....Bears, deer, squirrels, raccoons, ants, bees and gnats will all come to apples. If they don't come to your shampoo then it doesn't really smell like apples.
I'm also convinced that deer learn what common cover scents smell like. A few encounters with a deer while you're 99% scent free, people say you smell "further away" to the deer. Maybe the first time, but the next time that buck smells your 1%, he's not going to trust his nose for distance, he's going to get out of Dodge. Changing up your scent control products and not using what everyone else is using can help keep the deer in an area from patterning you. Even going with out any scent control once in a while can play to your advantage in the long run. Deer are curious, maybe 1 time with the funky apple shampoo will make them curious, after time, it will be a warning flag.
I had all my bow hunting gear stolen one year, had it all in a small scent free trailer that I could pull behind my motorcycle, truck or anything with a hitch. I had everything in the trailer and they took the whole trailer. I was devistated, didn't hunt for 2 weeks. All I had left was a back up bow and 4 arrows. After 2 weeks mourning and pouting, I decided to at least go out to the woods and see what's going on. Bright blue ski jacket, blue jeans, smelly old sneakers, every day cloths. It was one of the best hunting days I've had. I spent all day stalking the biggest buck I've ever seen bow hunting. Was within 40 yards a half dozen times, at sunset I had the sun at my back, wind in my face, he's way out in an open field with 0 cover. One step at a time, while he ate, I closed the distance, he'd look up, I'd freeze. I got to 35 yards, full draw, he turned away and took a few steps and kept eating. I took a few steps and he just walks slowly straight away. I let my draw down, looked at the time, 2 minutes past closing. I can't explain how good that hunt was for me. Without scent control or camo, I could still get it done.
American by birth, hunter by choice.