And it's fair, in that case a little bit of vinegar in the wash is your friend. But me, I'm obsessed with fresh scents (no overbearing florals!) and this thing I've posted does a wonderful job.
Yes I can confirm it works. Source: am currently in king size bed in my own 10tog single duvet whilst my husband is snoring away in his 13tog duvet. It's also great that you get to pick the warmth of your bedding !
I'm cackling and fanning myself at the same time