What you can do is avoid washing your hands with soap before setting traps. Watch cologne use to. In my opinion, men and cologne don;t go together at any time, let alone just before or during camping, hiking, or hunting.
Use creek water, local grasses, bark and leaves, etc to rub on your hands well before handling your snare and trap rigging. When I was much younger, I bought liquid "buck scent" from the outdoors store before going hunting, but I haven't used anything other than nature's offerings in years when hunting or fishing.
It depends on what you're trapping too. I'm no professional trapper, that's for sure, but I wouldn;t want to pet my favorite grizzly just to "mask my own scent" and just before setting a small animal snare. (((
))) Grasses, berries, creek water, dirt, etc are your best bet I think.
Think of it this way: You can;t hide your scent very well.... your body is going to secrete human odors no matter what you do. One of the best first steps is, of course, avoiding adding to your skin odors that are not present in the wild.