All jokes aside thats one of the many things I love about vapor - it leaves very little odor and if it does most non-users will think someone burnt popcorn. I've had some serious dank that left a trace but IMO that shit dissipates quickly, if not I would break some some incense cones.
I agree...I sometimes vape in shared space with non partakers...no one notices. I tend to vape a stem at a time mostly...but when I do more, I light a candle. Problem--more than solved.