if its tainted you can usually smell it or taste it.and not to many poeple do that anymore,i know your concerns years ago i bought some this is when i was like 14 if was laced with the stuff they put in dead people,puked up blood turn white as white can be,let me tell the dude that sold it to me had a visit from from my 6 brothers,lets just say he dont walk very well anymore

was 1st time i ever bought weed and was the last time,