Whenever the microwave is used to cook something with a strong smell like fish or popcorn, it fills the office. Let me state this now, if you microwave fish at work then you should exile yourself from society. You're a bad person and everybody hates you. If you microwave popcorn, it all depends on whether or not you burn it. The smell of burnt popcorn takes hours to go away and will drag the morale of a work space down. I think people who burn popcorn, just once, should be banned from ever bringing microwave popcorn in again. I am not one of those people, I am a wizard when it comes to microwaving popcorn at the office.
I find the smell of properly cooked popcorn to be incredibly comforting. It makes me think of going to the movies. Some people don't like the smell and believe in a scent free work place, those people are whiny and boring. Who doesn't like the smell of popcorn? It's basically the smell of corn and warm butter. Everything is better with butter. I love the smell of microwaved popcorn so much that I like to wave the opened bag around as I walk back to my desk. I'm also a bit of a troll so after I made some yesterday, I turned my fan on so I could assure everyone could enjoy the wonderful smell.