@parus, @secretwhitepop – Good morning- This is such an excellent topic. I use too get them with migraines, not necessarily when the headache was present but during my "migraine period" Since I have been taking CBD oil I haven't had any, or they are extremely mild. https://www.medicalnewstoday.com/articles/322698.php
I remember driving up to MA to visit my sister-in-law and started to smell something odd. My husband swore that the rubber smell wasn't real. I too thought, "OMG, another thing to make me crazy" but it wasn't. I think that it's very important to know that most of the things that we think are crazy within ourselves aren't. As individuals we just aren't that special. Rarely is something very new experienced by one person alone. We have to give ourselves credit for just being human.