Ds is in Year 5. In Maths and Science he sits next to this boy who clearly has toilet issues. Every day ds complains he smells of stale wee and it puts him off.
Parents eve is soon and dh says we should complain. I reckon the teacher will already know this kid stinks of wee so is it worth mentioning?
FWIW, most days I see this boy he comes out of school with a wet patch on his trousers 
Dh is of the 'Hey, this boy stinks and it's not fair my ds has to sit next to him every day' stance where as I am a little more diplomatic...
Any advice on how to tackle?