To keep smoke outside your home you shop minimize opening doors and windows. Make sure when they are closed they are sealed as well. There is something else you should do as well.... You should be changing your air filter in your home. These air filters catch the smoke particles and other particles in your home. If you don't change it you will continue to breath in that smoke for months after it's gone.
Randy Ekwall at Allied Comfort Pro has a son with asthma and says it's critical for them to make their filtration is good. Anyone with allergies, asthma or just really affect by the smoke should also get an air scrubber to really clean the air.
Randy shows me what a air filter looks like during the smoke and it was only put in for two months.
To speak with Randy visit their website: https://www.alliedcomfortpro.com/