The mechanism inside the spray head is gummed up with sticky residue (e.g., from essential oils, glass cleaner, or diluted glue).
It is incredibly frustrating when you pull the trigger and nothing happens. Whether it's a household cleaner, a plant mister, or hairspray, spray bottles often stop working due to simple mechanical blockages or air pressure issues. spray bottle stopped spraying
Here’s a detailed troubleshooting and repair guide for the subject: The mechanism inside the spray head is gummed
Oil spray bottle stopped spraying, any tips on a fix ? : r/Cooking from essential oils
: If you are spraying thick liquids like oil or starch, spray a bit of plain warm water through the nozzle after each session.