If you treat a circuit as a 2D surface, yes. But the cold spray won't evenly change the temperature of that 1000uf electrolytic capacitor. It's a good start though.
Side note:
A vendor my company uses outright rejects bug reports that aren't consistently reproducible. Very annoying.
We waste a lot of time trying to find a pattern to the issue, but can't always do so.
I've worked with a product manager that would reject very legitimate bug reports just because they came from me. Coming from a developer's mindset, I would make very detailed bug reports just like I would dream to receive. The product manager told my direct manager that I was trying to show off and make his team look bad. So then it became me writing up the bug report, but my manager would put his name on it and the product manager complaining our department was out to get him.
I hate it when they do that. Seen it from the inside, and it's a blatant cop-out. When a company shows no interest in tracking down and correcting their botched work that's a big red flag for me to be on the lookout for another vendor.
Imagine if Boeing said "those plane crashes are intermittent, we won't work this problem until you've consistently reproduced it."
Side note: A vendor my company uses outright rejects bug reports that aren't consistently reproducible. Very annoying.
We waste a lot of time trying to find a pattern to the issue, but can't always do so.