I haven’t seen a paper talking about this in general, would love a link if there is one.
There is ample research on hearing loss, tinnitus and various diseases, ear infections, possible side effect of drugs... it is often suggested that some event or product could have some impact, alleviate some symptoms or possibly aggravate others.
You global experience will affect your experience of sound. Your mood, ambient noises, the amount of light, the color of the walls, temperature, humidity, if you’re tired, if you spent the day in a noisier environment, if you slept well, how much salt you have in your body, if your well hydrated...
I read many things about coffee, but I stopped paying attention. Coffee is like chocolate, you have a study somewhere that suggests it does anything and another saying the opposite, without either being replicated. Most of the time it turns out to be some vague stuff tested on mice. Anytime I find research on those 2, I feel like the ice cream man in Ghost Dog. One day hearing on the radio that ice cream is good for people because it has calcium, another day hearing it’s bad because it has sugar.
In a more direct and external impact, you could have more or less ear wax, some ear infection, water in your hear canal. Temperature and humidity do affect the sound itself, IDK if we notice it as sound difference but it matters when doing precise measurements. Chances are that we still notice humidity and cold or hot temperature more with our entire body than by how it changed sound, which is why I listed both before as something the brain might care about for the subjective experience of sound, even without actual sound change being noticed.
And of course we’re never sure that our memory of yesterday’s sound is accurate enough to conclude that a difference is not simply due to the amount of misremembering or what we happened to focus on, or listening level having changed...
But you certainly are right that changes in our experience do happen. Much more realistic to believe this than to believe we are eternally perfect so we know the DAC burned in because 3 months ago we remember something different about the sound...
