Summary: The idea of code smells is they are patterns or anti-patterns that are easy to identify and show the code needs to be reviewed in that area when refactoring your code. Depending on who you ask or where you look there are lots of different code smells from general smells, to paradigm specific, to even language and framework specific smells. Code smells can be categorized different ways. Here they are grouped by what they do or the problems they cause.
