What does the word foetid mean?

Usage examples for foetid

  1. I would much rather have my breeding houses freeze a little than to have them filled with foetid air, and the birds breathe over and over again the ammonia arising from their own excrements. – Natural and Artificial Duck Culture by James Rankin
  2. I couldn't breathe in that foetid, burning air; I heard a frightful clamour. – Letters from my Windmill by Alphonse Daudet