Research SummariesWhen subjected to high CO2, body odor, and other bioeffluents, those with respiratory allergies performed worse in cognitive tests, reported more respiratory irritation, and had elevated inflammation markers when compared to the non-allergic. Indoor Air
Heat treatment with dry steam was effective at removing mold growth from masonry, especially when compared to hand scraping. Indoor Air
On a 60-year-old corrugated asbestos cement roof, exposed asbestos fibers were prone to mobilize, but no fibers were detected in outdoor air samples. JOEH
In a gym, chloraldimines were produced when sweaty surfaces were cleaned with a bleach‐based solution. Indoor Air
Ironing clothes can elevate the ultrafine particle concentrations by a factor ranging from 35 to 194. Building and Environment
In a review of research on the air exchange rates of homes around the world, the geometric mean was found to be 0.5 air changes per hour. Indoor Air
Construction workers with exposure to lead are an important source of lead dust in their homes. Environmental Research
According to a mathematical model, about 59% of all COVID-19 infections come from asymptomatic individuals: 35% from presymptomatic and 24% from those who remain asymptomatic. JAMA Network Open
For homemade face coverings, microfiber cloth demonstrated the highest filtration efficiency among the tested materials (and washing didn’t diminish performance too much). JOEH
Fit is critical to the level of protection offered by respirators. PLOS ONE
New terms should be used for the three main transmission routes of respiratory viruses: “drop spray”, “aerosol inhalation”, and “surface touch”. Indoor Air
A HEPA-based air cleaner providing over 5 air changes per hour reduces the airborne transmission risk for SARS-CoV-2. Pre-print
When air samples were collected inside the car of a COVID patient with mild symptoms, viable virus was only detected in the size range of 0.25 to 0.5 µm. Pre-print | 
