A very interesting question.
The answer is of course based on one’s own ethical standards. Tisha has given her answer, which is similar to many others on this forum.
I am not aware of any anti-pheromones groups. Most people do not think they can be significantly influenced by pheromones, so they don’t take an “anti” stance. If the evidence for behavioral effects becomes more widely known and accepted I would expect such “anti” groups to begin emerging.
Postscript added in edit - This is an old thread in which a number of ethical questions were explored