Recently flew on an Airbus, but usually fly on a carrier that only flies Boeings. Upon engine startup, there was a extremely strong "burnt oil" odor going through the cabin. Many people were covering their face with their shirt, trying to filter out the smell. I doubt it did anything because I could smell it through an N95.
This is very interesting. What is the physics behind this? Are the aerosolized oil particles small enough or flexible enough to make it through the mask? What is effective PPE for these kind of contaminants?
Edit: answered my second question on my own: P100 masks are effective
