A similar thing happened to me, and it was due to a tiny bite from my cornsnake about eight months ago.
Yeah, a cornsnake bite made me fearful.
Lame, but it is what it is.

I used to drape this animal around my neck. He would run up my shirt sleeve on a chilly day, and wrap around my waist. Sadly, no more of that.

It's been some work, and I'm still not over it. I handle the snakes daily, but an approaching head still makes me jumpy. I keep my hands clear of the head. Oddly, I have no problem hand feeding holding the mouse tail. That strike doesn't bother me at all. Go figure.