smoke out vs stumble upon

smoke out

verb
  • To expose (something or somebody). 

  • To smoke too much (usually cannabis); to become too stoned. 

  • To drive out (something or somebody) using smoke. 

  • To run out of tobacco or cannabis; to be emptied of tobacco or cannabis. 

  • To offer to smoke cannabis with someone; to smoke cannabis with someone. 

stumble upon

verb
  • To discover or find something by accident. 

  • To meet somebody by chance. 

How often have the words smoke out and stumble upon occurred in a corpus of books? (source: Google Ngram Viewer )