I can barely breathe thru the N95 as it is.I have been wearing an N95 mask covered with a simple cloth mask or folded bandanna. In case I accidentally touch the mask I’m touching the cloth cover which can be washed. Keep outside air flowing in your driver area. Open the vents to the outside instead of recirculated. Look to see if there are small fans that you can place to pull in the outside air. The school bus that I remember riding the driver had a sliding window, keep that thing open or cracked. If there is a seat behind you keep it unoccupied.
If you can afford it take a sabbatical. Not worth the risk. We have teachers and professional football players sitting this one out.
Coming from past experience w/ the district, I believe we will eventually close, again.
The district closed March, Friday the 13th, because 1 custodian in 1 school had symptoms.
The week prior, had a 2nd grader onboard w/ excessive dry cough, fatigue and headache. Mom said he had no fever. Good to go.
Combine similar seasonal flu symptoms with CV19 symptoms coming this fall/winter, what do you have ?
Refer: JAMA Age-Related Differences in Nasopharyngeal Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) Levels in Patients With Mild to Moderate Coronavirus Disease 2019 (COVID-19)