My dentist was showing off his new counter top filter that cleaned the room air is so many minutes. The room was about 10x10x10. I told him that to force all the air in the room through a filter tight enough to filter out something as small as the alleged virus would a motor three times bigger, and five times as loud.
My dentist was showing off his new counter top filter that cleaned the room air is so many minutes. The room was about 10x10x10. I told him that to force all the air in the room through a filter tight enough to filter out something as small as the alleged virus would a motor three times bigger, and five times as loud.
It was my last dental visit.