Al B. Fuct
once had a dog named
one thing leads to another and then i'm typing a bunch of stuff in your thread!
This is one of the few places in this world where you can blame the drugs and have it understood as perfectly normal.

could i put one of these https://www.rollitup.org/grow-room-design-setup/63004-my-3-carbon-filter.html over the fan? would it eliminate the odor?
Looks like it would work pretty well.
Axial fans are not very good at pushing air through high static loads as caused by obstructions. You don't need much airflow through the bud dryer for it to work, but neither do you need to pop any fan motors, which can occur if the output of an axial is fully blocked.would it hinder airflow too much?
I usually suggest centrif blowers for carbon filters, but that's over the top for a bud dryer. I think you might be better off with a very large cylindrical filter with thinner walls that would present a low flow resistance. Hard to make with granules and cloth, I know. You can buy activated carbon in sheets which might be a better form of the material for this application.