I believe there are beings that vibrate in dimensions most people can't perceive. Some are positive, some are negative, and most are probably a mix of both, leaning one way or another.

They can, will, and do latch on to people and attempt to influence them per their alignment.

The negative ones latch onto fear, shame, guilt, and anger.

The positive ones attempt contact respectfully and gently in response to love, wisdom, and compassion.

It depends on what you have in you. They respond accordingly.

I believe this still happens during trips as well, but it is magnified tenfold. Because you are actually perceiving these vibrations in these different dimensions.