Just that really. Working very closely so sitting near and talking together. I offered him water but he refused. Has a break mid morning and I offered him tea which he also refused. At lunch he didn't eat anything declaring he only ever eats one meal in the evenings. I honestly could barely concentrate and kept trying to think of how I could tactfully say - for gods sake eat something or brush your teeth because you stink and I'm going to be sick! Managed to get through the day. I don't often work with him but next time WIBU to say something? And if not then how would you say it? Or should I just carry mints to give him?