I followed my DS into the bathroom a few weeks ago and asked him afterwards if he had diarrhoea as there was that smell you get with diarrhoea. He asked what I meant and said that yes he did have loose bowels. I told him to be extra careful when washing his hands as it would be a bug and no one else wanted it.
He's still got loose bowels and admits that he had it last year at school too. I asked whether they float and he said he uses toilet paper to weigh them down. My mum has coeliac disease and I'm thinking I need to get him tested but could it be a virus? Do they last several weeks? He seems well enough in all other ways and eats like a horse (but is whippet thin).