1. If receiving an anesthetic, it may mean that one is trying to escape from reality.
2. Need for a vacation.
[1]To dream of being anaesthetized may represent the residue of a memory (e.g., from a medical operation). It could also reflect a desire to be relieved of some painful experience—physical, mental, or emotional.
[2]lucky numbers: 04-17-27-46-48-51
being chloroformed: a pleasant surprise when you realize what is going on.
others: your control tower has been gassed.
giving chloroform: deadening your feelings does not overcome emotional sorrow.
going under an: are trying to escape a reality better forgotten.
[3]