Bow tech
I have the same regimine except the chew thing. Dont know about chew, but ive seen snuff spook deer. Ive seen deer wind a spot where a snuf dipper spit, and ran the deer off. I have buddies that dip and they see far less deer than I when they hunt. It has got to the point they do not dip on stand, and rinse their mouths out real good with backing soada and water before hitting the field.
Chew might be different, but I wouldnt trust it. I guess it also depends on what part of the country you live in. If the deer smell natural tobacoo, it might make a difference. Not much of it growing here in Texas.