i guess the reason is that zombie pheromones count as a CBM (what the fuck? oh well though) for no apparent reason and give the message about “you might find some bionics dissecting this” even though there’s actually no real chance for bionics to be yielded and the best case result will only give pheromone.
would be a lot less confusing if the message differentiated (correctly) between bionics being present and not, no clue what a zombie pheromone is (i’ve looked, some kind of lure, useless in other words) or why i’d ever want one but they seem to have an incredibly small usefulness in game so it’s kinda annoying to flat out lie to the player about the expected returns like this.