To reek of failure and annoyance, used as a comedic way to tell someone that they disappointed you or another.
To tell another person that you are better than them.
Christian! You smell like cheese!
Why do I not smell like cheese?
Buy a
You Smell Like Cheese
mug!
Typically refers to an annoyance, or somebody who constantly makes mistakes in extremely simple tasks.
McBoi, how did you do that?
Really? McBoi!