How does dirt get in your house? • Windows • Doors • Air Conditioning • Pets • You!
Facts About Breathing • You breath about 26,000 times a day (16-18 breaths per minute) • That is about 150 full bathtubs of air • We breath in over a billion small particles a day (1,000,000,000) • The average house collects about 2 pounds of dust a week
Mucus Dried Mucus forms when mucus traps dirt in the nose
Nasal Hair Nose hairs filter most of the dirt in the air.