RE: Deer scent used by Indians
I would read it as this,
When hunting deer, if the wind shifted from the way it had been blowing, in order to continue the hunt they would use doe urine they carried with them in bladders. But I would suspect that they would wash down with it as a masking scent in order to be able to come at the deer from a upwind side. Simple to do. Pour some into your hand and rub it on your face, arms, etc. It would take seconds and could be done behind cover so as not to give yourself away with movement. Besides, "spraying" it out from a container could make more noise and disturbance than just a quick wash and it is being used to cover your own body scent so when you you do anything but put it on yourself.
this is only an semi-educated guess though.