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.
What can cause tastes to change? Taste buds are constantly being replaced, so changes in health, nutrition, medications, hormones and age can all affect how they function, causing foods to taste bland or all the same, or leading to a metallic, sweet, chalky, blood-like or otherwise undesirable taste in the mouth.