Not sure .. often the sinuses are involved in pnd. For me it's mainly when I go to bed... had to explain, but mucus seems to back up and go where it shouldn't go. I have to 'snort' (I know.. disgusting) and it ends up in my mouth. I hate swallowing it so I then use a Kleenex... I go through BOXES of them. As you can imagine .. it's hard to be sleeping with all that going on. If your husband uses a nasal spray some loosen the mucus. I use Omneris , but have no problem during the day. Well, much less of a problem.
Haven't tried the Vicks yet. 🙂

@lacy2 my nose drips during allergy season. I use Flonase nasal spray, salt water spray and sometimes non-drowsy allergy meds.
It turned out I was allergic to my dog too. The dripping nose was better when she passed.