I am getting throat irritation and running nose, what could be the cause and what is the treatment for it, I have a 3 month old kid, does my cold throat infection passes to him via breastfeed? or it could be via air

A. for sore throat it is important to give warm water to drink. continue warm milk as well as warm fluidsd for the child. if it is paining you can give paracetamol to the child. if the condition doesn't improve in 2 days it is advisable to meet the doctor to find whether it is due to viral or bacterial dinfection