Guerilla growing has both pros and cons, take a look at that ✌🏻😇

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.
👍

Any grow shop will point you in the directions you’ll need. And don’t be afraid to ask

Rhino pro carbon filter with a decent extract fan is all you need.
Also recommend a AC Infinity Thermoforge grow room heater for managing temps.

Absolutely yes! Carbon filters have made this entirely possible. Have a look on some of the growing forums. Your only issue will be controlling temperature.

Oh sweet, thanks I will. Agh, I’ll look into the temperature problems

Best way to keep the pong down in a shed is a carbon filter with an inline fan – absolute game changer. Make sure the shed’s sealed up too, because even tiny gaps will let the smell creep out. Some people stick a bit of silicone or caulk or air freshener outside as a backup, but don’t put it near your plants or it can mess with the flavour.
MedsMunchedTeam

Thanks for your reply, appreciate the info