No one can catch a sinus infection from another person, but the viruses and bacteria that cause colds and other respiratory tract * infections that can trigger sinusitis may spread from person to person in drops of fluid from the nose or mouth.
We call the major salivary glands the parotid, submandibular, and sublingual glands. They all secrete saliva into your mouth, the parotid through tubes that drain saliva, called salivary ducts, near your upper teeth, submandibular under your tongue, and the sublingual through many ducts in the floor of your mouth.
Saliva drains into the mouth through small tubes called ducts. When there is a problem with the salivary glands or ducts you may experience symptoms such as salivary gland swelling, dry mouth, pain, fever, and foul-tasting drainage into the mouth.