How to curb air pollution inside the house

Things to do or buy to curb air pollution in India specially Delhi & NCR:

1. Buy air purifying plants like money plants, snake plants, chinese evergreen plants. more
2. Buy Air Purifier with hepa filter. My suggestion would be something like this.
3. Air humidifier is another thing to try. It also helps control pm2.5 level. more
4. For outdoor activities if necessary buy atleast N95 mask which can filter pm2.5 level particles, like this.

Avoid taking out kids for outdoor activities if air pollution level is hazardous. Even old people n adults should avoid. Upgrade to a electric vehicle if possible. Use public transport wherever possible.