I have a question guys.........

A lot of us swear by the latest and greatest scent suits, sprays, etc.... however I know plenty of guys thast just hunt..... these guys are all hunting deer that live in areas very close to farm houses, crops etc.... where Im assuming deer get used to human scent to a certain degree..... THATS my question - how much do you think deer living in small woodlots split by crops, with rows of houses nearby get used to human scent ?