Shanks nailed it! I'd post a link to the video clip, but the language might offend. If you do a youtube search for trailer park boys, Samsquamptch, you'll find the clip. [h=1][/h]
I got some news for you, just because you can't smell it doesn't mean there is no scent.
You clothes smell, your feet smell, your own body has an odour. Smells from cooking, smells from brushing your teeth, smells from washing, smells from the last labrador tea batch you walked through. They are there.
If a bear concerns you that much try hanging a cheesecloth bag of dog hair from your tent. There will still be a scent but that scent may be enough of a discouragement to keep any curious bear at bay.
A few years ago a bear walked through my campsite at night. I heard its breathing as it sniffed around, but it never sniffed at my tent. That was the upside. The downside was that it didn't seem to be deterred by my snarling and barking.