I have been a chewer/bowhunter now for 23 years. I have had a chew in my mouth for every kill. Until last year, I never thought about it, but last season I had two deer give me the slip and made me think about this. Both deer came in down wind of me, (for what it is worth I was wearing scent-loc and had taken a scent free shower within hours of this happening). The first deer came in about an hour after first light (small doe) and she came it I knew she was getting to a spot that would put her directly in path with my scent. She stopped, looked right up in the tree at me and then walked back the direction she came from. The second deer came down on the same trail and did exactly the same. So, with out a question, these deer picked up a scent they did not like. Was that scent my spit on the ground, or me? Who knows, I do know it was enought that I started carring a glass bottle with me to spit in (plastic makes too much noise). I recommendation would be, if you want to chew on the stand, take something to spit in. Why take the chance?