i could stink up your house..at the same time i'm sure you smoke weed.. and that doesn't stink up your house?
well if you can bonsai a weed plant.. good luck. it's tough to do man, so say bonsai people, because it's naturally a soft stem plant, where most people bonsai hard stem trees/plants . but weed can get hard stem, and turned bonsai, you just have to watch it.. (if you are talking TRUE bonsai)
true bonzai is the act of miniturizing the plant and stunting the growth. you usually are cutting the foliage and roots to do this, and the roots of bonzai plants are open and usually sit on wet rocks or in very shallow medium. bonzai is no joke and for professional gardeners with tedious tending schedules.
if you are just talkin about keepin a houseplant.. i know someone that used to do that, and randomly it would produce little buds here and there.