I have made no secret over the years of the twin facts that I am a smoker and that I use a MacBook Pro. What I have probably not mentioned is that most of the time I roll my own ciggies.

This means I can be endlessly entertained as stray bits of tobacco and ash disappear without trace between the keys on my laptop. They have even managed to work their way down the side of the trackpad. But, amazingly, things still work. Which is not the case for the MacBook belonging to my other half. She doesn’t smoke and probably the worse thing to get lost between her keys are small particles of Green and Blacks. And I do mean ’small’ as any Green and Blacks that might get lost would automatically register as a tragedy and I would have heard about it. Her MacBook, despite being newer than mine and not subject to tobacco abuse, had sticking keys and the odd one that had to be hit firmly with a small mallet to function.

So – always helpful and thoughtful – my eldest son came over to Swordfish Towers at the weekend armed with his compressor and airbrush to gently blow – at round 50 psi – the muck from our Macs. That’s him in the first picture doing just that and the second is an enlarged area of my screen where you can see some of the stuff that was being blown out.

Great fun was had by all as we watched hairs, fluff and other unidentifiable particles coming back out from their resting place. The good news is that my wife now has a fully functional keyboard. We did not, however, retrieve enough tobacco out of mine to give me a smoke.