Letter 'o' key not responding
****o everyone,
Few days ago I was cleaning my MacBook Pro's keyboard with a damp ear swab. I think a little bit of liquid got under the 'o' key and it stopped responding. Right now I'm using it with copy-paste. If you can help, I'd like to know how to replace the function of another key (for example the ç key) so, when I tap it, it responds as it was an 'o'. I tried the keyboard settings but it only leaves me change the function keys. I'd appreciate your help a lot.
Greetings.
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I'm using MacOs High Sierra (10.13.2) in a 13" Mid-2012 MacBook Pro (2,9 GHz intel Core i7, 8 GB RAM DDR3).
MacBook Pro (13-inch Mid 2012), macOS High Sierra (10.13.2)