Hiya again, lol
I've been using Boots smile breath spray i think it's £1.79 and doesn't seem to have knocked me out of ketosis or anything yet either and works really well too.
It was in amongst the toothbrushes and mouthwash etc rather than chewing gum bit etc.
Sounds grim but i've taken to brushing my tongue too which seems to have helped this problem quite a bit.
Cath.