If the selfish panic-buyers near you have made that impossible, use a couple of squirts of antibacterial spray onto a piece of clean cloth or kitchen paper and wipe the keyboard down as normal.

Then you can spray your microfiber cloth — here's my imaginary ... out with the compressed air is going to fall down instead of back into the keyboard or, worse, on your face.

Ideally, you'll want to shut down your MacBook before cleaning ... While you can lightly moisten the cloth for cleaning the Mac's keyboard, you should use the least possible amount of water.

To clean your MacBook keyboard, I recommend spraying a very, very small amount of the WHOOSH solution onto a microfiber cloth and wiping the keys down. Then, use the dry side to remove any liquid ...