My daughter is 3 years old and she is having cold and cough for more than 3 weeks. No fever. 2 days back visited pediatrician and he said lungs are clear and there is no sign of infection. He prescribed rekof. My concern is that may be she is suffering with any allergy! I want to know about types of colds and causes. Is that eating one chocolate daily can cause cold? My husband is asthmatic. So, I worried so much about my kids. Can you please tell precautions.