Ryno_nuggs
Cultivators Club
If you put a tent in there, you could also insulate the tent to reduce the noise. The cloudlind style fans are quieter than the cheap fans. I have see a couple knock off. I believe vivosun makes one.It seems pretty big, I wasn't going to use the whole space though, the plan was to put a tent in there. Maybe a 1.2x1.2m tent which I've already got. Its the noise levels of fans I was concerned about. Didnt think much of smell if I paid for a decent fan and filter. 2 if needed.
My cloudline is in a well insulated tent in a garage and I have no smell or noise from outside the garage. That storage container does have thin walls so the noise will be louder than through a garage wall.
Also as mentioned already a larger fan than what you need will allow you to run it at a lower level which will significantly reduce noise levels.