Is it a bad omen to see snakes trying to chase you in dreams? What do scriptures say about such dreams? If its a bad omen, what is the remedy for it?
As per this Agni Purana chapter, it is a good omen in fact.
A fairly detailed analysis of dreams and Omens is provided in Agni Purana. Dreams are good when they involve mountains, palaces, snakes, riding horses or bulls, white flowers, trees, possession of arms and many heads, triumphs in wars, wearing garlands or clothes, witnessing eclipses, Stars, Sun or Moon, eating rice pudding, drinking wine or blood, eating meat,milking cows, buffalos, blessings from Devas, Brahmanas, coronation, one’s own death or cutting off head, one’s own house burning, playing musical instruments, climbing trees, clear skies, wet clothes and so on. Bad dreams are a shaven head of one’s own, wearing shabby clothes, drinking oil, house collapse, angry Gods or Brahmanas, falling from above, killing snakes or animals, playing with monkeys, weddings, singing and so on. Prayers to Vishnu, or Shiva or Ganesha or Surya would appease bad dreams, while good dreams should enable the dreamer to make them true if the person discontinues sleeping.
The "Essence of Dharma Sindhu" book (also hosted at the Kamakoti.org) says the following as regards dreams that are related to snakes:
Swapna Prakarana: Swimming in a river or Se a, flying in the Sky, Graha-Nakshatra-Surya-Chandra darshana, hiking a high building or a temple, drinking hard drinks, eating meat, spraying krimi-keetaas on one’s body, viewing jewellery and golden articles, drowning in blood streams, eating curd rice, wearing white clothes and applying chandana and such other scented materials; viewing Brahmanas , Devatas and Kings, viewing women nicely decorated and dresses, encountering a Vrishabha, milk, trees full of attractive fruits; scaling high mountains; obtaining mirrors, meat, flower garlands, whit e flowers and meeting persons dressed in white are all dreams of auspiciousness. On the other hand b ad dreams and their impact include scaling neem, valmeeka and Palasha trees or snake pits; obtaining oil, metal and cotton are bad omens. Punarvivaha, Rakta Vastra dharana, drowning in swift currents o f water, eating cooked meat; viewing Grahanaas, droppings of Nakshatras from the Sky are signs of ap proaching signs of death. Seeing the flowers of Ashoka, Karaveera and Palasha is ‘Shoka’or sorrow; a lighting a boat is a sign of travel; wearing blood stained clothes or embracing a woman are signs.
More results of Desirable Dreams are the views of Kings, elephants, horses, Gold, Vrishabha, and scaling of trees would result in monetary gains and Kutumba Vriddhi round the corner. If there is a dream that white serpent bites a person’s right hand that person would receive a lot of money. If a dream occurs that a scorpion or snake devour a person in a water fl ow then that person would soon get victory and excellent progeny
And, then it repeats, what i have already given, that is the account from the Agni Purana.