Can you chew tobacco while hunting deer?

Ive been dipping for many years and have shot many deer while chewing! It goes back to the question of do you think deer associate chewing with humans. They dont have the recolection of know what the smell is! As I teach new hunters into the sport I tell them one thing "You can fool a deers eyes and ears but its nearly immpossible to fool their nose!" If you eliminate your human odor or reduce it whatever your eating chewing or drinking in your stand does not matter as much!