Hi Jeff,
Here's one on nasal spray but in a different group:
--- Compounded Ketamine nasal spray for pain and anxiety: https://connect.mayoclinic.org/discussion/compounded-ketamine-nasal-spray-for-pain-and-anxiety/

Looks like there have been 39 posts on the ketamine nasal spray: https://connect.mayoclinic.org/search/?search=ketamine+nasal+spray