5 ms·
Buy a CO2 + PM2.5 detector. They're fairly cheap on Aliexpress (~$70). You might just need to ventilate more often.
by Factorium 5y ago
Buy a CO2 + PM2.5 detector. They're fairly cheap on Aliexpress (~$70). You might just need to ventilate more often.
- clairity 5y agoyes, i have an air quality meter and ventilate my apartment during day, but i keep the closet door closed to keep the cat out. the air purifier does a decent (but not perfect) enough job that it's tolerable for now.