My 21 month old has a stinking cough and cold. I usually give my 4 year old a few spoonfuls of high strength manuka honey during the day when he is ill and I believe the high strength stuff really has benefits. Would it be ok to give some to the younger one. Everything on the internet suggests ok after 18 months but would hate to give it to her for her then to develop some sort of nasty illness that honey can cause. What do you think?