Don't worry about calls, that won't do anything at this time of year. Just wash your clothing in unscented, UV-free detergent and you'll be ok. More importantly, you'll need to know the wind direction for the days you hunt and choose your spots accordingly. Being in a treestand will give you an edge, but make sure to keep movement slow and to a minimum.
Keep in mind that 99% of the noise you will hear are squirrels. Deer are incredibly stealthy animals. If they are coming, try to stand up and get ready well ahead of time; draw when they're not looking or their head is behind a tree (if possible). Make sure to get your proper form and trust in your practice to take the shot. Either use a rangefinder or pace off distances before getting into the tree to know your ranges (landmark off a tree, rock, etc) so that you can react appropriately depending on the path a passing deer will take.
As Rich said, always and I mean always, wear a harness. Depending on if you're using a climbing stand or a fixed one, there should be options to use a climbing restraint rope so that you are locked to the tree from the moment you step off the ground until you return. Too many people have been crippled or killed ignoring proper treestand safety.
Plan to be in early and out late. Deer are usually still pretty nocturnal and you'll see them returning in the morning from feeding to bed, and heading out again at dusk.