“BLOCK” Function?

  I’ve tried a search here for such a function,and I’ve come up empty. Is there a way to block certain members? Not just from personal messages,but so they don’t show up in any topic I’m reading. Sometimes it’s nice to ask a question and learn something without someone trying to rub your nose in your lack of knowledge like a dog that did his business in the house.  I am all for learning from others. That’s one of the reasons I frequent this site. However,there are some folks here that do have vast knowledge, but are as abrasive as 40 grit sandpaper. For those folks I’m ready to throw the baby out with the bath water.