Yes to the air purifier. People living without them are insane. Also, buying and running an air purifier destroyed my marriage! My wife said she didn't like the sound of it. So I bough a new, super quite one. Then she said she didn't like the "frequency" not the volume of the machine. One day I came home and she had unplugged it and we got into an argument. I told her to please just "shut up" and that was when she attacked and literally tried to kill me. I got away but later she went to the police and told them she had been "assaulted". Nothing happened but she filed for divorce.
I still love the air purifier though!