hmn i guess u could taste it, the thickness would feel diff to the lungs, and the high would be waaaaay off. but listen to fallout, its un-businesswise to waste extra drugs for the same price so dont even sweat it
it does happen there was a story on here not to long ago where some kid got pcp laced weed. Although that was because they dude sold him what he thought was normal weed and the laced shit was for the dealer
Ive smoked pcp twice unknowingly the first time i was just trippin cause i had to go home and wasn't planning on getting that messed up but overall i would love for my dealer to start lacing my weed with a little bit of dust...