filthy vs smelly

filthy

adj
  • Covered with filth; very dirty. 

  • Obscene or offensive. 

  • Very unpleasant or disagreeable. 

verb
  • To make very dirty; to saturate something with dirt. 

  • To cover in filth. 

smelly

adj
  • Having a bad smell. 

  • Having signs that suggest a design problem; having a code smell. 

  • Having a quality that arouses suspicion. 

noun
  • a Short Magazine Lee Enfield rifle or one of its derivatives. 

How often have the words filthy and smelly occurred in a corpus of books? (source: Google Ngram Viewer )