Just listened! I believe the comic with the pheromone cloak was Harvest/Hive and they used it to sneak through the hive to steal that sweet jelly. Hicks said Stronghold which also has a synthetic alien but I don't think it had the pheromones in it although I don't remember much from that comic except Jeri the cigar smoking alien lol.
Edit: I checked and Stronghold also uses the pheromone collars (although they mention the scientist from Harvest that created it) so good call out Hicks!