If it's only occasionally, it may have something to do with your bed. I don't think you are hot, but something in your bed rolled over and touched you while sleeping. Don't worry about this situation.
According to Duke Zhou's inference, dreaming is a bad thing, and good things will happen in reality.
If you dream of poisonous insects, you may want to get rich. Otherwise your career will go up.
In fact, there is no need to believe in so many superstitions and things like that. Mentality is like everything!