Most bulap, jute or other Ghillie material that you purchase has been treated with a fire retardant chemical. Factor in the burlap smell, and it can be a dead give-away in the woods. Be cautious when washing you Ghillie suit, you do not want to put it into a washing machine. This will give you one big burlap knot. Instead, fill a slop sink, tub, or anything else big enough to hold it. Add scent eliminator clothing wash, and and water, then let it soak, do not agitate the water. Repeat with clean water several times. Set up several towels outside, and spread it out, like it's a fine sweater, to dry. Place a few rocks on it if it's a windy day. Then you can add whatever scent you want to it, like I posted previously.
You can use baking soda and water as well, but for the first time, I would recommend the scent eliminator wash. Good Luck, great job Curt.