You are definitely not gonna keep it a secret from someone living in house, let alone someone with a job to access and clean the house Just a newly locked door will be instant tip off. I got nosy in-laws that don't live here. Left them alone for less than one hour of babysitting in my living room, they start asking about a keyed lock on my bedroom door.
Told them I liked privacy and to keep all the guns away from kids. No baby supplies in my room, why you checking? Lost serious brownie points that day. Pretty sure FIL may know, but at least plausible deniability and all.
For harvest, my 8x20 closet smelled for a couple hours anytime the plant left the tent, even for 30 seconds. Cutting down and moving to drying cabinet next to tent, it smelled overnight. If I open the closet door even once during that time my large bedroom smells as well.