My 2 year old has had a cough practically since Christmas. It's not a chest infection, he isn't wheezing but he sometimes has a runny nose as well. He doesn't cough during the day really. I'm starting to think it might be an allergy as I have asthma and my husband has food allergies. His bob the builder duvet cover has been washed a couple times already and the duvet is synthetic so I'm stumped! His bed is near the radiator though. What are your thoughts?!