Go ask if instant coffee counts as a bean variety. Watch the instructor try to keep a straight face. Your burnt rubber home brew will look like a win after that. Libraries are for learning, but that question might get you a lifetime ban from the coffee club. Seriously though, those awkward moments are why the workshops happen. We all have to start with the dumb questions before we get any good.

Worry about the safety side of things when weird smells show up... like @hannah_williams pointing out how strange fruit pits in a shop is, a sweet smell could make people ignore a real hazard. That candy smell might cover up other fumes you should actually be worried about. Someone might not notice a real problem because they're just thinking about dessert. It seems funny until you consider someone could get hurt missing a warning sign.