As long as you've always been pretty good about managing your food (and toiletries), and don't have food particles in your pack, not a huge issue. Personally, the only thing I keep in my vestibule is my boots.---Keep in mind, cleaning products, toothpaste, scented chapstick, etc. can be just as attractive as food. I've seen a bear eat a Brillo pad (talk about easy tracking).
I loved all 4 years of doing the bear work (and why I am still so passionate about bears). It was great the first year doing all the radio telemetry work. Part of my job was to test level of habituation, which literally meant seeing how close I could get before getting a reaction (actually get up and move, or actually watch me with more than a simple look up). Learned about they all have different personalities and unique behaviors, but lots of generalities you could play with. All this was done unarmed other than pepper spray when I was starting to approach the 20' mark on a bear. I would do this 12-15 times a day. I loved every minute of it, and only felt threatened once when I interfered with a bear's love life. My last two years was more outreach and enforcement related.
It became "work" occasionally twofold. First, I suck at taking time off. Like today, I'm technically off, but I'm writing this up at lunch. When I was doing the doing the bear work, it wasn't uncommon for me to be 19-21 days on, and 1 day off. All my partners were more 5-7 to 2. Secondly, it sucked when I had to hunt down or trap and kill a initiated by someone usually blatant stupidity. I had an incident my first year where a crew left lots of random food laying around, and a bear got into it. Due too the fact it had NO reaction to people trying to run it off, the decision was made to put it down. We'll just say the small sow (119 lbs), took 3 lethally placed 12 ga slugs, and took an extended period of time to die. It hit everyone involved pretty hard. I trapped and moved a lot of bears. They are probably about the easiest things to trap. But there was something of a kick in the gut when you walked up to a trap, and discovered the bear was already sporting 2 yellow ear tags (3 strikes). Almost every bear I trapped started with someone leaving food (or toothpaste) out in some capacity.----Ironically, I had one bear I trapped 45 seconds after I drove off, and another that walked in within 5 minutes of me setting the trap. The mix of rotted bear meat (what was handy), watermelon, and occasionally vomit (not kidding, my help would often get sick setting the trap, free, stinky bait). I would mix the watermelon and meat together in black trash bags at the beginning of summer. I'd throw the mix on the roof until I needed it, usually a month or more later. It came out as a grey lumpy soup. Stunk like all get out, but bears couldn't get enough of it.