When visually challenged, and even fully-sighted, it is important to check where the nozzle is on an aerosol can before pressing down to spray.
I speak from experience. There have been several HSI (Hair Spray Incidents) and last night I had my first cooking spray shower.
At least, so far, I haven’t mixed up the two. But spray tuned. Here at SisterRain.net, anything can happen. And it usually does.