Will my ball be in a constant state of 'hunt' with a new hamster coming into the house??

Obviously I won't be holding them at the same time, but the little guy may be rolling around in a ball in the snakes location (livingroom). I'll be washing my hands after playing with either of course, but how acute are snakes' sense of smell? Will he likely smell him in another room and be ready to attack my water-chaging hand on a daily basis?