Is fine particulate matters can cause you catch a cold

Fine particle counter which can easy go inside human lung with breath.
This way the bad air go inside body can cause catch a cold.
With the particle counter we can check the air quality not only the weight but also the quantity.
PM2.5 and PM10. all can show out with the laser particle counter.
Let us know the current data of the fine particulate matters then take care of body health.