Today, my just turned 11yo's teacher told his class that 'refilling and reusing water bottles (i.e. Mount franklin etc), will give you certain types of cancer'.
I'm currently undergoing treatment for breast cancer, which my sons' teachers have had to be told about, owing to their initial upset, and subsequent unsettled periods (two mastectomies, three other operations, hospitalised for three infections, and the fact that I get quite sick every three weeks from chemo). I was also completely bald for about four months, so there isn't much chance that they've forgotten about it.
Anyway, ds1 came home today quite upset - we live in Australia, and as most days it's 30 degrees plus (6mths of the year), I will fill up all the water bottles we've bought, or got with eg. Kids meals, and shove them in the fridge. It encourages all four ds' (and me!) to help themselves all day and stay hydrated. We do keep glass bottles in the fridge also for meal times, but the other bottles have sports caps, which reduce spillage.
Anyway, ds1 was upset, and asked me if that's why I had gotten cancer, and if he and his brothers would now too 
Aibu to think that apart from being completely unfounded baseless claims, it was a bloody insensitive thing to say to a young boy whose mother is undergoing intensive cancer treatment?