Welcome to HCM
We understnd your concerns
I read your problem descriptions and am quite sure that I should be able clear your doubts.
We understand things through five of our senses namely eye, ear, nose, tongue and skin. These senses get the so called ability to understand what we feel or see or hear or smell through some previous inputs already stored in the brain. We see a chair and we understand that it is a chair because brain have a previously understood notion or picture of chair stored. Got it.
Sometimes, such perception might get a bit confusing due to ome neurological deficiency
and we will be unble to decipher what se feel or see etc. And we start seeing what we saw earlier, repeatedly or what we smelt earlier repeatedly. This is one type of delusion
or if it follows a same pattern can be OCD
For the time being learn to ignore the cue and live normally. After some days the cue should die down. Just don't be serious or anxious about it.
Wait for some days and if the problem persists, do consult a psychologist
first and then if required a psychiatrist
Hope I am able to clarify your doubts. Available for further queries.