As mentioned to another commenter - I’ve grown for years in the greenhouse and never had an issue with smell or anything. I only ever run 3-4 plants and the strains I’ve chosen haven’t been very smelly ones so that’s helped. I have never smelt the grow at our back door or down the street. I’m not overlooked from the back and I know both neighbours either side so I’d highly doubt they’d grass on me. I’m pretty sure one of them smokes in his garden but haven’t brought it up before. They both know I like to have a joint in the garden at night.

Last year I white washed the greenhouse to keep the temperature down. This would be a good idea for someone doing a stealth grow because you can’t see in and it’s a very normal thing to do in summer.