There are studies that relate pheromone exposures to changes in hormones production (for example Androstenone-Testosterone). Although I don’t know if these changes are significantly harmfull, specially taking in count we only breathe them…
Pheraoh, read this post that discuss the same.
Any health complications from short or long term pheromone use? - #3 by capone
Anyway it would be interesting to know if there are some recent discoveries in this topic. Anybody?