When you sneeze you make a noise which seems like “ACHOO”, meaning Autosomal dominant Compelling Helio-Ophthalmic Outburst Syndrome

I didn't know this was even a real abbreviation of anything :)

Also, I sneeze a lot because of bright light, and what I hate is when I failed it. Something like I want to sneeze, I really want to... and it doesn't come. This is by the way one of the favorite game of @lamouthe: trying to disturb me so that I failed the sneezing :D