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If you used it in a room with someone else they would notice a strange smell but nothing like at a concert or something. It does not smell like burnt cannabis since it is not being burnt. If you want stealth and privacy they are the way to go. Remember vapor is not smoke you don't have to worry about it reaking down the hall or stagnating in the room. Soxsuk is showing some ignorance with the piss smell. With a vaporizer, you don't need an hour with a fan or other odor control when vapor is gone in minutes. Now that you have the facts and nothing but the facts the choice is yours.
Loco
The smoke itself doesn't smell like piss right away but put itaway and it will smell like piss. It's not ignorance I have one and I hate it. I got caught with it because my mom walked in to a room that I had used it and she smelled it and I guess she thought all weed smelled like that. You still will need to spray stuff and turn on your fan if anyone in your dorm is against weed and would turn you in.