[Leica] Wildfire smoke filter

[Peter Klein]

How bad is the smoke in Seattle? We have been using our portable air conditioner as a makeshift air cleaner. We run it on “recirculate” with Swiffer sheets over the air intake. Left: A fresh Swiffer sheet. Right: A Swiffer sheet after 2 days filtering. This is indoor air with doors and windows closed. 
<https://www.flickr.com/photos/24844563@N04/50343779941>

--Peter, dictating to my iPad
(If it misconstrues, please excuse)