
Originally Posted by
Whitey
I think that animals can actually smell pheromones and the like, as many animals have more developed senses of smell than we do. I think it is a completely unconscious thing with humans - IOW the pheromones are scentless, to us - but they can certainly act on us, and cause certain peptides to be released in our bodies and make us feel a certain way.
Just one example, girls that live together (roommates) - their menstrual cycles very often end up aligning with each other, so they have their periods at the same time. Weird, huh?