Couldn't tell you how many times I have been out with the chainsaw to look up and see a deer only 50yds away staring right at me. I do believe that some noises and scents make deer curious and they come to investigate. I even had someone tell me that deer that live in areas that have been lumbered out have put 2 and 2 together and figured out that the sound of a chainsaw can mean new food for them as tree tops have been dropped to the ground. Now I'm not quite sure I believe that they are that smart but I also have no info to disprove this man's opinion. Good luck.