Baking soda does not kill or neutralize odors - big misconception. It attracts or captures odors by bonding to them at the moleuclar level. So in essence, what it does, is it attaches the odors thereby keeping them from becoming airborn. I would never put it on my outer garments as baking soda will start collecting/attaching whatever molecules it comes in contact with. What is effective is to cover your body and inner clothing layers with it prior to going hunting. One thing I learned from a Myles Keller article years ago is to cover my hair with it and then use a shower cap on top.... makes since as the head release most heat from the body and heat escaping equals human scent being dispersed. I use to spend a great amount of time really trying to stay scent free.... bought all the gimmicks and tried everything - same result.... deer downwind busted me unless I had rising thermals. So - I wash my clothing in all free and clear, store it in plastic bins with some cedar, and then I hunt DOWNWIND. I am alkso very picky now days about entry and exit routes. I occasinaollly will use a scent killer spray and I sometimes use baking soda while I am getting dressed.
I still laught at how much money I spent on thus silly carbon suits. I was in the military and I knew that once they are opened carbon suits fill up within a few hours and are totally ineffective at attracting anything.... and yet I bought the stuff. And there are still writers today, often very respected hunters, that swear by them. Of course some deer downwind will not smell you all the time - wind currents and thermals do amazing things - but it sure isn't because they are wear "re-charged" carbon suits. Same can be said about washing your gear in baking soda.
Every little bit helps - but rest assured the single best thing you can do for scent control is to only hunt with the wind in your favor and to really pay attention to how you will enter and leave your stands.... a deer's nose really is that good.