Don't cook in your sleeping area in bear country. Cook away from it.

I don't take a seperate tarp - in fact I use my poncho tarp for this which then goes under
my hammock bottom when I sleep - but I don't cook in my sleeping area.

I firmly believe there is more food odor on my beard, and coming out of my bottom when I fart
while alseep, than attaches itself to a silnylon tarp while I'm boiling water, eating food, and making tea. Now if you're frying a pound of bacon and adding a packet of smoked salmon, and using the grease to waterproof your tarp, that's different - Don't so that <img src="/forums/images/graemlins/wink.gif" alt="" />

The key thing is don't cook where you are sleeping. keep a hundred meters or so from it.
and ditto your food storage from both your sleeping and cooking place.