title_body: Why the small hole on coffee packaging? Why not?
upvoted_answer: The existence of the de-gassing vent was answered here:
  
  What is the clear plastic sticker on New England Coffee bags for?
  
  If the manufacturer does not feel that the coffee (usually whole beans) will need C02 venting, there will be ho holes or vents. That will be the case if the coffee is packaged a week or so after roasting.
  
  more:  https://www.coffeecrossroads.com/coffee-101/how-to-store-coffee-to-keep-it-fresh
  
  some boutique coffee packages have an aroma vent - for you to squeeze the bag and smell the coffee.