olfactory vs unpalatable

olfactory

adj

  • Concerning the sense of smell. 

noun

  • The sense of smell. 

unpalatable

adj

  • Unpleasant to the taste. 

  • Unpleasant or disagreeable. 

noun

  • Anything distasteful. 

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