comment: >
  
  Not what I meant. Cilantro tastes to me like I'm eating a bar of soap and that particular reaction is apparently shared by a decent subset of people. I can't imagine that it tastes that way to everyone as I doubt many people would want to eat soap. So I am more saying that it's possible that OP and others may be having a similar taste reaction to avocado that I and others have to Cilantro. That or there may be a question of freshness or other ingredients.
context: i think this may be a cilantro type thing, certain foods csn have an unpleadsnt taste due to certain subsets. >
  
  Yup. That guac had cilantro in it.