dcutrara,
Thanks for getting back in touch with us after reviewing those support articles.
If certain apps use a large amount of energy, it wouldn't be uncommon for the fans to run during those actions. If you'd like, I suggest taking a look at the processes that are running on your Mac when the fan noise begins. This might help isolate the issue to a particular app. Here's how:
How to use Activity Monitor on your Mac
From there, the SMC is responsible for the fans and other thermal-management features. If you haven't yet, I recommend giving that step a try.
If this concern continues, contact Apple Support for further assistance:
Get Support
Have a great day.