When an animal engages in agonistic behavior, it often puffs up to appear larger and more menacing to other animals. what is the adaptive value of this behavior?

Prevention of second hand smoke

You did not show us the image of the burger, but i shall try to answer as best i can.  when purchasing food, always consider the ingredients as well as the person who prepared it. consider if they were hygienic people or not, in case the burger was infected with bacteria. no mortal should place an infected burger into their mouth.