DIY Air Purifier

It is a good way to save some money. But with my abilities, you cannot be sure that the DIY air purifier will do its job by purifying the air. I would rather buy and pay some extra money, but I need to be 100% sure that the product actually works properly. I have two little kids in my house, and I want them to breathe clean air. Sometimes, when its too cold outside, or we just lazy to leave the house, we smoke inside. Obviously, we don’t do this infant of our kids, but I need to be sure that the smoke is gone, and will not affect them. I bought an air purifier in the online store Damage Control 911, and I don’t regret spending on it. However, if my budget was limited I would probably try to do my own.