as with most brain chemisty, endorphins and enkeaphalins are a large topic, and there is a new class of “bliss neurotransmitters” called anandamides… they supposedly give you feeling of pleasure and satisfaction from eating fatty foods and smoking pot, among other things…
“The researchers found that anandamide is part of a network of nerve cells in an area of the brain called the striatum, which coordinates all body movements and other motor behavior. In the striatum, the anandamide network inhibited dopamine’s attempts to stimulate the body’s motor nerves. Normally, nerve cells regulate this behavior by releasing anandamides at the same time they release dopamine. In order to temper the effects of dopamine, the anandamides bind to nerve cell sites called cannabinoid receptors, so-named because they are targets of tetrahydrocannabinol (marijuana’s active ingredient) as well as related chemicals like anandamides. When anandamides were bound to these receptors, body movement in the rats decreased.”
This might explain why after good sex or smoking cannabis materials, people tend to be lethargic and physically sort of stuporous..
Some pheromones or putatives might, that’s a very tenetative “might”, have a moderate impact on endorphin or anandamide receptors..
However, as the drug companies figured out with other aspects of brain chemistry… this issue might be how fast a particular brain breaks down pleasure chemicals… as many medicine like Prozac actually work by preventing the breakdown of neurotransmitters… it’s up to your brain to make them…