I am curious to see how you are typed since we have very similar stats, sts. I am INFJ in MBTI, 459, sx/sp and a synesthete. As I'm writing this a brown recluse spider fell, from the ceiling, about three feet from me. Sent me into panic mode. hahah I was bitten once, my foot was swollen for a week. Anyway, It made me lose my train of thought...
The way I experience it is a merging of sound, taste and smell. Certain words will trigger.... I don't tell people exactly how, usually, because then they start experimenting on me like I'm Pavlov's dog.
Welcome...