my daughter is two and half year old . she has running nose with fever due environment change.. then which medicine is better

A. Cough and Cold together along with the symptom like Fever loss of appetite irritability could be a feature of viehkral infection mostly like flu so supportive treatment is required. along with that cough expectorant along with decongestant and antiallergic medications are needed. steam inhalation can be given too as it will relieve the symptoms.