Gas Chamber 
To dream of seeing yourself in a gas chamber indicates you are feeling trapped in your life or feel you are in a negative situation that is important to leave or get away from it.
Pandora's Box
To dream of Pandora's Box suggests a belief that you are dangerous or evil. A toxic belief system may be at play. You could be protecting yourself against intimacy because you may hurt your loved ones.
To open Pandora's box is a strong indication that you may need to seek help in opening your heart and may, in fact, be ready to do so.
Bounty Hunter
If your dream features a bounty hunter coming after you, consider what reason possibly could there be in your waking life that someone wants to find out about you or investigate you. For instance, you might have taken off from a place of meeting without saying anything, making yourself look suspicious, or you had been running away from someone or something. A bounty hunter chasing you in a dream is a symbol of fear that you're feeling of getting objectified or treated unequally.
If you are the bounty hunter, this symbolizes a desire for more adventure and risks in your life.
Boa Constrictor
Seeing a boa constrictor in a dream represents something closing in on you. For instance, a deadline may be looming or you may keep getting work piled on. You may feel like life is 'tightening' around you and constricting your breathing (a symbol of your life).