Directionality in an aerosol overcap is a matter of degree. All of these units can be missprayed if one tries hard enough.1976, American Society for Testing and Materials, Child-resistant Packaging, page 27:
To avoid misspraying, a pilot will check wind direction from the smoke of burning tires.1982, Geo - Volume 4, Issue 1, page 92:
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An impurity passed into your gun could cause it to misspray or clog, creating a lot of extra work fixing the paint surface and your spray gun.2003, Dennis W. Parks, How to Paint Your Car, page 111:
misspray
noun
Etymology From mis- + spray.
1
An instance of misspraying.
This is your last chance to prevent any impurities or clumps from entering spray gun passages and causing a clog or misspray.2009, Tharran E. Gaines, How to Paint Your Tractor, page 103:
They worked in silence for about half an hour before removing the masking tape and scraping at the missprays.2010, Henry Porter, Brandenburg:
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This allowed operators to quickly discover if their tanks were leaking or if a misspray occurred.2012, Kansas History - Volume 35, page 123: