Do DIY air filters work against California wildfire smoke? What to know about cost and safety
![](https://energy.ucdavis.edu/wp-content/uploads/DIY-FilterBox-2022.jpg)
Do-it-yourself air filters are safe, effective and can be used to protect your lungs from California wildfire smoke.
Do-it-yourself air filters are safe, effective and can be used to protect your lungs from California wildfire smoke.