That all depends on the growing method you go with. It is definitely much easier to go incognito if you grow your plants indoors. If you’re growing in a tent, simply keep the doors shut and get a carbon filter to reduce the scent. If it’s a spare room in your home, like a basement space, hiding your crops will be a no-brainer. There will be some noise/light and smell pollution, but that is part of the deal. You will just have to do some disguising. Speaking of disguising, you'll need this especially for outdoor growing. The aroma of cannabis may draw suspicion from neighbours, so it would be wise to place them alongside companion plants like peppermint to cover that distinct smell.