I'm not a biologist. I have read that low oxygen levels in the home can have a negative effect on health. I am interested in increasing the amount of oxygen in the air in my home.
To open the windows would be the most effective way but the air outside is cold and measurably polluted (PM2.5 usually greater than 30µg/m3) so I would like to find other ways.
I know that plants add oxygen to the air but I have read that an unrealistically large amount of plants would be needed to make a meaningful difference to the oxygen levels.
I am wondering what other methods I can use and also whether what I have written above is correct.
Please forgive me for my ignorance. If this is the wrong place to ask this question then please help me to find the right place. Also sorry for not knowing what tags to use.