Can I put warm mustard oil in my newborn's blocked nose?

No, never put any oil in your newborn's nose. Rather, massage him with mustard oil. It will help in reducing cough and cold during winters. You can put one or two cloves of garlic in mustard oil and heat the oil. Once the oil is lukewarm, massage your baby with the oil. The strong smell of mustard oil along with garlic helps in reducing the nasal congestion, there by cures cold and cough.