Air Purifier
highlite_me asked:

I have a room used by a tenant before & just recently she moved back. She’s very afraid of dust and dirtiness but unfortunately I still think she’s dirty. The main point is she always keeps the windows closed and the doors closed, that the air in there is really different from the rest of the air in our house. It’s really like a-little-choking kind of air, I believe it’s 90% carbon dioxide? Cause she breathes is out when she’s in the room and never ventilates the room. How to purify the air there like put some lemon grass (just e.g!) or what to make the air there healthier as a cheaper alternative to an air purifier? Thanks!