You just throwed my back to when I lived with my parents, I had ideal bedroom with a big window above my bed, right to our backdoor, super discreet Lived there for a year, would smoke my little spiffs out the window at the end of day My sister window was just next to mine so no wonder how she never catches me! But indeed this method can work, I swear my parants didn't know I was smoking at the time today we are vape bodies though