Unfortunately, the smell from a dead animal can take weeks and sometimes months to disappear. The problem with dead animals in a wall or somewhere in your house is that the dead tissue breaks down and the decaying tissue produces liquids that can seep into the wood in your walls and floor.
The following drugs, medications, substances or toxins may possibly cause Bitter tastes as a side effect. [ See detailed list of 23 drug side effect causes of Bitter tastes 1  ]. Sinemet. 2  Sinemet CR. 3  Lodosyn.
Stroke or Brain Tumour: In some cases the salty taste will not be caused by anything in your mouth at all, but rather faulty signals in your brain. If the salty taste has no other clear cause then you should consult with your doctor and they might suggest an MRI scan to rule out that possibility.