Several Arduino projects use optical dust sensors like GP2Y1010AU0F to measure indoor air quality. I would like to do the same in living room, bedroom and kitchen. I am interested mainly in PM2.5-PM10, but I would be interested also in pollens, meaning up to PM100 (according to Wikipedia). Going below PM2.5 may be difficult and not worth the effort.
However, in the kitchen there is risk of particles sticking to the measurement sensor, altering the baseline: when cooking, it's normal to have some oil particles in the air, even if the sensor is not directly exposed to the cooking area.
The datasheet of said sensor explicitly states:
Please don’t do cleaning, because there is a case that this device is not satisfied with its characteristics by cleaning"
It's probably translated from another language, but it's clear: no cleaning recommended.
Also, the datasheet states:
There is a case that this product does not detect the dust density correctly, since the dust adhered to the inside of the dust through hole may project into the detecting space which consist of emitter and detector light axis. Please take the structure and mechanism of the equipment into consideration to avoid the influence of adhered dust. And when the dust is adhered, please consider the maintenance such as vacuuming or blowing off the dust by air. In addition, please pay attention to structure and placing location of the application to avoid any adhesive particle like oil, etc. to gets into the device. If it sticks to optical part, malfunction may occur.
What should I use to measure dust/particles in the kitchen?