Small can be done to very near silent, but it will be hard in a single skin wooden shed.
As for smell, you can be totally smell proof with the right carbon filter.
Carboair 60 or 100mm bed
Mountainair
Rino pro
These are the best filters in order IMO
8” iso max fan with a couple of wraps of carpet underlay will run silent, the only noise will come from your ductwork, which you can also wrap or use the insulated stuff.
Your room needs an intake a well as extraction, this can be a small small fan or a vent on the wall… smell won’t get out as long as your room is under negative pressure.
If you move forward, I’m happy to offer some tried and tested advice.
👍
As for smell, you can be totally smell proof with the right carbon filter.
Carboair 60 or 100mm bed
Mountainair
Rino pro
These are the best filters in order IMO
8” iso max fan with a couple of wraps of carpet underlay will run silent, the only noise will come from your ductwork, which you can also wrap or use the insulated stuff.
Your room needs an intake a well as extraction, this can be a small small fan or a vent on the wall… smell won’t get out as long as your room is under negative pressure.
If you move forward, I’m happy to offer some tried and tested advice.
👍