Originally Posted by MikeyBoyAz

In most cases though, the smoke from cannabis is not really the problem, it is obviously smoke... but the typical issue is that due to the substance being historically illegal it has been distributed through less than reliable channels aka: drug dealers. This of course does not apply to home grown etc, but for those who did not have a tree in the backyard or the closet with a lamp... they would go elsewhere. This is where the problem starts, because the person(s) cutting the substance down to individual delivery packages do not clean off the crystal meth or acid off the table... why bother? So... you end up getting more than mary jane...