The people I was with and I are finally getting ourselves ready to start back to regular class after months of not being able to go into the local university.
One thing that our teenagers observed about the class way back before they stopped going when the shutdowns started was the degree to which the air quality was suffering.
They always said that on sizzling days at school, the air conditioning was always blowing full blast and the room would get beyond cold. They said that the air vents were right above the art desks and the massive cooling system would blow down right on their heads throughout the whole class, freezing them in their seats. They would come out after class was over, and they would often ask me to turn the heating on in the car. Which of course I wouldn’t do, because I felt that the temperature outside was still unquestionably moderate back then. That ordeal was in the early Spring before all of the corona shutdowns, and the local weather was still heating up. Anyway, now that they are finally getting to go back to attending class on an in person basis, they were unquestionably cheerful to report to both of us that the air quality in the classroom was much better now than it ever was before the shutdowns all started. Apparently the university used this time and completely redid the whole HVAC system while they were closed down, and the local commercial HVAC company who did the task did an unquestionably good task.