Most often refers to something negative and harmful in your life such as negative thought patterns, bad behaviors, an unhealthy relationship, etc. What situation or what person in your real life is “poisonous” to you? If you are poisoning someone, this may reflect your desire to get them out of your life or that you wish them ill will. If you have been poisoned then your dream is warning you that there is something or someone very harmful in your life that you need to rid yourself of.