Willy Bones Jr lives and walks in an older Houston neighborhood.
Joy, his human companion, roams the neighborhood with him.
On the way to their favorite walking path, they cross a busy street near an elementary school.
That means they’ve been near said street when diesel-burning vehicles pass by, including school buses and dump trucks.
What does a sneeze communicate?
It seems observationally notable that Willy always sneezes when a dump truck goes by but never sneezes when a school bus passes. His reaction is unexpected because both burn diesel fuel in their engines.
The school buses, however, are much less odiferous — perhaps there’s more to the story.
DPM, particulate filters, low-sulfur fuel, ultrafine particles
Turns out, Houston school districts use low-sulfur fuels and have retrofitted buses with filters that trap diesel particulate (DPM) so that kids don’t inhale it outside the bus or in the bus.
DPM is also UFP:
“When released into the atmosphere, DPM can take the form of individual particles or chain aggregates, with most in the invisible sub-micrometer range of 100 nanometers, also known as ultrafine particles (UFP) or PM0.1.”
Because UFP is so very small, it can easily be inhaled. It is hoped the wise and wonderful Willy sneezes out all the UFP he encounters.
UFP in kid-friendly environments
We were very happy to work with the Children’s Museum of Houston to install fume extractors for their 3D printer, laser cutter and soldering stations.
Their Maker Annex is designed to promote tinkering and creativity in a safe environment.
Want to talk about UFP in your space?