Dreaming of aggressive snakes is considered bad by dream meaning and interpretation. A person after the seeing the dream might face unexpected difficulties in life, accident, attack of animals, poison related problems and also threat to life.
Dream of aggressive snake attacking or chasing you is a sign of trouble in career or personal life due to another person especially someone who is jealous of you.
Dream of aggressive snake and someone you know is a warning that someone close to you might get into trouble due to an action of yours.
Dream of aggressive snake and unknown people means you will have to fight with someone on street for no particular reason. It is best to avoid such fights.