What Flix said. Having awakened one morning to the sight of a mama bear knocking over a few of my buddies' backpacks (which sight distracted us enough that we all neglected to see her two cubs in the woods a few yards behind us), I've come to believe that it's prudent to keep anything that might smell vaguely like food in an easily-found-and-separated place in one's gear, rather than scattered throughout it in a way that you won't be able to find it and get it up into a tree when you're bedding down for the night.
On that topic, I've also had some issues with beeswax (commonly used as an ingredient in leather conditioners and preservatives); while I'm merely unsure whether or not it would attract bears (or "mini-bears", a/k/a squirrels, etc.), I can tell you that it really CAN draw deep and favorable attention from bees. Since most of the bees around here are now of the Africanized "killer" variety (I'm told that large hives can be seen from one of Phoenix' more-popular in-town mountain hiking trails), I've hesitated to use beeswax-based leather preservatives.