What is the relationship between the common cold and other respiratory viruses with xerostomia?

Decongestants and analgesics, used to treat symptoms, can cause
or worsen dry mouth

Dry mouth can be a symptom of the common cold due
to dehydration caused by fever

The common cold can cause dry mouth due to excessive saliva
production to fight the virus

The common cold can cause dry mouth due to inflammation of
the salivary glands