Air pollution directly linked to increased dementia risk

Only so much you can do about ambient pollution in your city.

Looking carefully at your cooking situation is worthwhile though. Was horrified by the spike in readings from stuff like steak in a pan

An air purifier is pretty cheap and will cut down on indoor pollution from cooking a lot. Or at least that’s how it seemed from the somewhat unreliable sensor I was using.

https://www.nytimes.com/wirecutter/reviews/best-air-purifier...

FWIW, I think the wirecutter's quality for air purifiers is pretty bad, and likely more influenced by affiliate payments than science: https://dynomight.net/ikea-purifier/

I tried the cheap IKEA model and with my severe dust mite allergies the model was insufficient in comparison to calm my sixth sinus-bound sense.

My main suspicion: In my last 3 abodes with pre-1955 construction in East Coast, the pre-filter on the top Wirecutter pick needs to be cleaned 3x per carbon filter replacement in order to reduce largest particle accumulation on the carbon or HEPA filters.

The inexpensive IKEA model did not have a viable and easily cleaned pre filter as far as I could figure out.