A good practice to follow after using aerosol sprays especially for nonstick cooking sprays is to do three things.
1. Turn the can upside down and spray a bit of the contents.
2. Rinse the nozzle off in running hot water.
3. Store the can upside down on top of its lid.
(We store our cans on an enclosed wire rack so that the cans can sit on their lids without clamping the lids.)