Answer:
Negative
Explanation:
if you walk into a room and say there is the smell of someone's cooking you think something along the lines of 'yum, i wonder what their cooking but it smells good', whereas, if you walk into a room and say there is the stench of someone's cooking you think something along the lines of 'eww what the heck are they cooking'. stench has a negative connotation because it changes the sentence by making the cooking sound disgusting whereas smell makes the cooking sound fragrant and absolutely delicious.
i hope this helped :))
