Mom is 99 years old, bedridden, severely immobile, has a weak immune system and late stage Alzheimer’s. She requires 24 hour care and supervision. Dentures are loose but dentist said new dentures wouldn’t be a better fit given deterioration (flattening) of gums. Not sure if an infection is more likely the culprit rather than dentures.
Oh, dust also caused a similar issue. Dust likes to hide on the carpet/floor behind the headboard of the bed.
I would consult her doctor it is possible that her food needs to be pureed and liquids thickened.