 [ Symptoms ] how does smoke affect allergies [ Disease ] webmd allergy consultant paul enright md an arizona based pulmonologist tells webmd that it is important to keep kids with childhood allergies away from all smoke do not let anyone smoke around the child since smoke increases the deposition of allergens in the nose and lungs also do not use a fireplace burn candles burn incense or use plug in air fresheners  in addition be aware of weather changes as sudden changes in temperature or an increase in humidity may increase the child is allergy symptoms