Who's kidding who here, cooking is done in the vestibule of tents all the time in bad weather.
That's why most people want a vestibule on their tent.The chance of getting some some CO is greater with no chimney and you can not burn wood. Flareup of gas stoves is dangerous for those that cook in the vestibule. I do not need a vestibule because I use an inside chimney so I can cook inside safely with solid fuels.
If there was 2 backpackers cooking their bacon 200 yards apart. One in his tent and the other one out in the open with only his backpack. So a hungry bear shows up. First of all would the bear be afraid of the guy in the open and go for the guy in the tent. Would the guy in the open be afraid of the bear and back away from his bacon. The bear gets his bacon which endangers every camper after that because of a bacon loving bear. Only a fool would stand his ground to defend his bacon.
The guy in the tent just waits with spray ready and maybe the bear gets a dose of spray but no bacon and will never go near a tent for the rest of his life. A bear may charge at the guy in the open but not the guy in the tent.
I have eye level horizontal slit vents on each side of my tarp pitch, I am always checking out the neighbors, so I would see or hear the bear.
It has to be decided how much effort you want to make to try to wipe away all scent of food on your skin, breath,clothes, tent fabric.
Last edited by chimney packer; 04-14-2017 at 05:27 AM.