Looking to buy isolate

[thesk8nmidget]

Bad tasting CBD isolate and how to avoid it.

We recently came across what was sold as CBD Isolate which when smoked tasted awful. It’s been my experience that isolate usually had no flavor or one somewhat similar to the strain used. Those with more experience crystallizing CBD, is there a decent explanation for any flavor to isolate both good and bad? Also, would there be any particular processing blunders to avoid doing this?