@hybotics Indoors air can be horribly hit or miss, all depending on the ventilation.
The job I had back in 2015 was one of the worst, if not the absolutely worst, I’ve had to endure for 9 months. Each day I arrived at work and started coughing within minutes. One day I took a closer look at the ventilation outlets and they were caked with dust. No wonder I had issues with coughing!
When that assignment ended, I was first happy and then relieved. Quite a nasty place to have to suffer for any period of time, and I haven’t missed it one bit.
/@matigo