Air Duster damage

I'm sorry your laptop was damaged. It is an unfortunate accident. Most cans of compressed air state in their directions to hold the can upright when spraying the air. Perhaps it could be more clearly stated that when the can is tipped too far the can will spray some moisture with the air and it could be extremely cold. However, most manufacturers don't explain the reasons for their directions (looking at you Apple), so it falls to the user to follow the directions precisely or learn more about the product to understand the consequences of using it incorrectly. You can contact the manufacturer of the product using the information listed on the can or packaging. The supermarket has no responsibility on how the product is used by the customer.

I've accidentally damaged my fair share of items over the years (some quite expensive as well and not always my own) so I know how bad and frustrated you must feel. I kick myself for days afterward, but I always chalk it up to another life lesson learned the hard way.

FYI, here is the science behind a can of compressed air:

https://sciencing.com/canned-air-cold-5157676.html

Here are Apple's instructions for properly cleaning the laptop keyboard using compressed air:

https://support.apple.com/en-us/HT205662

Here is another Apple article for other cleaning tips:

https://support.apple.com/en-us/HT204172

Only water triggers the liquid contact indicators. However, if it gets really cold it can result in condensation of water vapor. Bringing a device in from a cold place quickly to humid conditions may do the same thing.

I still feel that there is liability with the manufacturer through insufficient information.

You need to accept responsibility for the accidental damage. Aside from what you term "insufficient" information, there is still something called common sense. Personally, I have never used canned air, but if I were, I would carefully drape something over the screen/lid so as not to accidentally hit it. I would also not spray it where any of it could seep inside - as everyone knows: electronics and liquids do not mix.