Originally Posted by
benajah
Thats what vestibules are for.
It also depends on what kind of cooking. Making coffee and ramen wont draw yummy scents into the fabric so much. making up bacon and eggs is a different story.
If you travel exclusively in an area where bears and other animals are not a problem, you might be okay, but I still wouldn't chance it. Wildlife can be a problem almost everywhere in Canada and in many parts of the U.S. Why put yourself at any increased risk?