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04:18
@Pᴀᴜʟsᴛᴇʀ2 yeah, I'm the OP :) and yeah, I wrote that thinking in terms of hydrocarbons causing smog outside, not the obvious indoor air quality problem they're also posing :P
 
8 hours later…
12:48
@Shalvenay - My apologies ... I didn't realize ... thick in the head, it would seem :o)

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