Sex advice with Suzi Godson - His stale breath in the morning is a turn-off

Morning breath affects nearly everyone to some degree, but morning sex is such an indulgent luxury that it would be a shame to allow it to interfere. Mornings are the optimum time for sex because you are both relaxed and snuggly. This makes it more sensual and less self-conscious, and this combination of disinhibition and sensuousness can make it much easier to achieve orgasm.
The issue that you mention sounds normal to me. Bad morning breath happens because of a build-up of foul-smelling sulphur compounds while you sleep. During the day these microscopic organisms are washed away by eating, drinking and normal saliva production, but as you sleep, your normal flow of saliva decreases and your mouth gradually begins to dry out.