Not at all! The asset is free and it's called EZ Tornado.
https://assetstore.unity.com/packages/vfx/particles/environment/ez-tornado-20302...
I don't know why I kept the jet pack controls secret - I think I felt a need to keep some things to be discovered/worked out. Probably was the wrong thing for that. Thanks again!
Please don't forget to rate the game if you haven't already :)