Oh I have have been through that more times than I can count. We just recently had a leak from the upstairs toilet. A repairman just mudded in the square, about 12" x 12". I should have known better and moved everything off of the counter but I didn't. So it took a couple of hours to just wipe everything down. The worst was the major remodel we did. Our home is 70+ years old and we had a single car garage and a sun porch with jalousie windows. We decided to knock out the wall between them and make a large family room. For six weeks we had construction going on. I have severe asthma and had HEPA filters all over the kitchen and new family room and bought extra for the rest of the house. It took about 4-6 weeks for the tiny particles to disappear.