Agreed. Since I don't know, probably the most I can hope for is some kind of generic VOC sensor. Is there is such a thing?
With regards to particular emissions, it looks as though there's a Honeywell unit that's smaller than the others and the seller listing claims that it's fully callibrated: https://www.aliexpress.com/item/PM2-5-sensor-HONEYWELL-HPMA115S0-XXX-laser-pm2-5-air-quality-detection-sensor-module-Super-dust/32829242280.html?spm=2114.10010108.1000013.3.2fc91af7A0JTzC&gps-id=pcDetailBottomMoreThisSeller&scm=1007.13339.90158.0&scm_id=1007.13339.90158.0&scm-url=1007.13339.90158.0&pvid=57ffa5dd-6d44-4d46-ae2c-8133b92ef714
Looking now, the datasheet also says it's fully calibrated, so I guess I believe it: https://www.honeywellscportal.com/honeywell-sensing-hpm-series-particle-sensors-datasheet-32322550-e-en.pdf
Are the alternatives, such as the SDS011 or the PMS2005, fully calibrated? If not, then the Honeywell might have that as an advantage, together with a generally good reputation for quality and durability.
Another good thing, at least from my perspective, is that I can buy it from Digikey or Mouser, without having to wait for a China shipment or run the risk of getting shanghai'd by a Chinese counterfeit.
There are a number of libraries on github for it: https://github.com/search?q=HPMA115S0