PSA to everyone in California (or on the West Coast in general): I strongly suggest you go to Home Depot and pick up a pack of N95 or N99 respirators. They quickly sold out everywhere when Seattle had major fires, and even Amazon was backordered. You want ones with exhaust valves to facilitate comfortable breathing, and TWO straps, not earloops or a single strap! Surgical masks and bandannas don't make a good enough seal or have a tight enough weave to effectively filter out smoke.