I've written a bit before about transmission of shakti, or spiritual energy. What I want to focus on here are the dangers of transmission to the wrong person at the wrong time.
One way (and perhaps the only one) in which transmission is similar to hypnosis in that the recipient has to be open, has to have a welcoming attitude of trust. But sometimes, the recipient may not realize what s/he is opening to. In fact, the thought-wall that we use to protect our sense of a separate self is pierced in a transmission. The results can be blissful, startling, disruptive, confusing, or almost anything else. This is so because they depend on both the relationship already established with the transmitter and on the recipient's karma and how that karma reacts to being met with the pure, unmediated life energy.
It's not necessary, unfortunately, for a transmitter to be egoless. Some people learn to use this energy for power over others. I'm not going to discuss these situations here except to say that they happen. What I want to talk about is how transmission can cause confusion and pain even when the transmitter has the best of intentions.
Transmission can seem so easy for the transmitter. The transmitter knows that they intend to do – to open the other person to how the divine, unmediated by the mind, feels. But if the recipient has never known this before, the energy might not be interpreted this way. The result might be an extreme attachment to the transmitter in one form or another. It could come in the form of, you brought me bliss; no one else can do for me what you do, and now I love you forever. Or it can come in the form of some kind of repulsion or fear because the transmitter has upset the personality's balance of defenses. Sometimes, the chaos that ensues can last a long time. So one rule I think is important is, If you know how to transmit, don't do it unless you are willing to stay in the person's life to make sure it turns out the way you hope it will.
The life energy that gets transmitted can also be transmitted through other channels – through sex, for example. But sex requires physical touch, and generally people know it is coming and can decide whether they are up for it or not. There are also lots of societal rules about whom to have sex with. It's not like that with transmission. You can gaze at a person in a certain way – maybe even someone you have never seen before -- and suddenly they are in another dimension and it has happened so suddenly that they have no clue what happened to them.
Of course, that's part of the reason it is so effective: the defenses that are normally present aren't there because the transmission was unexpected. Suddenly, the connection between two people is more intimate than would ever happen in sex; sometimes the two people literally become one as boundaries disappear. How the mind interprets what happens can vary, but initially the mind actually can't get a good grip around it, and it is not until the mind learns to relax and let it happen that moving into deeper dimensions of consciousness starts to be truly fulfilling.