The best replacement for pheromone is hormone.

The best alternatives to pheromone are rated as following:
★★★★★  hormone
★★  kairomone
★  allomone

Your alternative for pheromone is not listed? Suggest!
Speaking about pheromone, one probably shouldn't forget about cologne.

Other search terms related to pheromone and their ratings are:
★★★★★ cologne
★★ perfume
You have in mind a companion for pheromone and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of pheromone in all years. Click on graph for more.
pheromone
hormone
kairomone