"Headaches are a horror to suffer with."
I know this all too well unfortunately, having suffered with almost daily migraines for the past 2 years. Around 50% of the time they are just a very bad headache but for the other 50% they include sight-loss/distortion, nausea and numbness of limbs. The doctors cannot explain why I get them and blood tests showed nothing. It was worrying at first but now, like you, I have learned to live with them.
Back on topic - it is great to see more pictures!! That air purifier is very interesting as I've never seen one made by HOOVER. What year was it from do you know?