A garage is ideal. No smell in the house and it really is much safer for a number of reasons. The downside is you do need to heat and cool it. You can’t really exhaust warm air as condensation forums quickly with the incoming air. Humidity is always much higher. I’m always reading grows where people are adding humidifiers and wet towels to increase RH. Meanwhile my RH would be 98% in an hour without a dehumidifier going 24/7.
When I was "studying" to get a grow tent prepared, I also kept reading about people needing humidifier ..i was like damn...more money. Then I remembered where I live..it hardly goes below 50 RH on any given day. lol