Stop Snoring Remedies

My hubby wheezes on a night and it is waking me up. He has no knowledge of this and even claims to be awake when I ask him to turn over but is unaware he is doing it. It is not snoring, more like a wheeze. For the sake of my sanity how do I stop this so I can get some sleep. By the way it doesn’t reduce it if he does turn over.