Welcome to justanswer,
This distorted taste can be due to many factors.
The common causes are sinus , nose, tooth infection, flu, common cold
, strep throat, dry mouth, heart burn, reflux etc.
Aging, dryness of mouth, smoking, vitamin B12 or zinc deficiency, salivary gland infection, Sjogren, diabetes, thyroid
or nerve diseases like Bell's palsy, smoking,effect of medicines can also be factors.
My advise to you is that You need to have an examination by physician to find out any such factor for this taste and further treatment would depend on the cause.
GOD BLESS YOU