Hi..
Can understand your concern..
As per your complain salty taste in mouth can occur due to a number of reasons
like Dehydration, Cold and
Post nasal drip, Smoking, Dry mouth due to
Autoimmune disease like Sjogren's Syndrome,
salivary gland infections,Multiple sclerosis, Stroke etc..
In case if you instill eye drops in your eyes then they can also cause salty taste in mouth as the tears via tear ducts enters nasal passage which ultimately enters mouth leading to a very salty taste..
In case if you are confusing salty taste with
metallic taste and if you have some sort of metallic taste also it can be due to some medication which you are taking..
These can be some cause..
I would suggest you to consult an oral pathologist and get evaluated and the treatment can be planned only after clinical examination and laboratory investigations if needed..
You can maintain a good hydration by drinking plenty of water as dehydration can be a common cause of salty taste in mouth..
Hope this helps..
Regards..