if you have a low-to-the-ground comfy chair or a wide-width back of the couch, then your dog might find that to be the best place to lounge, especially if it means curling around your neck and nuzzling your hair.
i’m not saying this happened to me (it did) and to ensure that it won’t happen again (despite all efforts, it will), know that the nuzzling you assume is happening, might actually be the other end of the dog rubbing against your perfectly coifed curls (see, not me, as you know i don’t have curls [dude, everyone knows you’re talking about yourself. shut up, sarah]).
when/if this happens, the recommended treatment is an immediate and thorough shower. use copious amounts of soap. swearing is therapeutic, but optional.