Which I did not allow. I searched and could not find a bug and I had a feeling he was imagining the bug. Then at breakfast, he sat down with a bowl of cereal and says a bug flew into it and he threw it all down the garbage disposal. I asked him if he was sure he saw a bug and he said absolutely. Anybody else have experience with hallucinations of bugs?
My first experience was my FIL had a head trauma. During his hospitalization he began to see “things” which turned out to be a symptom of his sodium level being off. As the sodium level was adjusted his vision seem to return to normal (stopped seeing bugs) before the sodium returned to normal. That was a bit difficult.
A friend told a story of his father seeing insects when he was going through alcohol detox. After the detox the symptoms went away.
Then of course, there are floaters that people sometimes get in their eyes.
There may may be many more reasons this is happening. These are just the ones I’ve had experience with.
As always start with his PCP for blood work to help you sort this out.
If your husband has not been "properly" tested and diagnosed do so as if he does have Lewey Body dementia finding the correct medications is critical.
You might want to give him a spray bottle with water and a bit of lavender oil or lemon oil in it and he can spray to his heart's content and it will not harm anything.
I am glad you have a scheduled appointment with an eye doctor. Make sure they are aware of any diagnosis and any medication he is taking.
When my Dad first started to see ants on the walls and ants in his food, right away he had an UTI test [easy, pee in a cup], and sure enough that is what he had. Once the antibiotics kicked in, the ants went away :)