@dee @benjojo
You actually saw the outside in daylight? 😲
(Another sound & Lx tech who toured too)

@dee @benjojo hey, that's interesting, and also what I experienced this year: I had a lot of problems inside 38C3 (but arriving with an already slightly attacked respiratory tract for most of December), and I felt that the hazers really wore me out. Thanks for sharing your stories and sharing the literature links. 👍

@dee @benjojo the smoke in the entrance area was not very thick, it was more of a consistent haze to make the light show visible. In Halle H it was a light haze, likely because lasers needs less smoke. No idea what's defined as industry standard, but it was not _that_ much. It was longer than a night out though.

@RichiH @dee @benjojo

Imo the smoke was quite thick on day 1, and the remaining days had less of it.

@RichiH @dee @benjojo

Day 2 in Halle H it measured 2300ppm, as an anecdote.

@benjojo
C02, PM 2.5 said 1039 ug/m3

@benjojo

We were measuring air quality and was also asking the same question at our habitat.

Links from what someone gathered in the signal group we have.
https://pubmed.ncbi.nlm.nih.gov/36168228/

https://pubmed.ncbi.nlm.nih.gov/15828073/

https://www.researchgate.net/publication/227786603_Effects_of_theatrical_smokes_and_fogs_on_respiratory_health_in_the_entertainment_industry

@benjojo Vape fluid tends to be a little different from fog fluid too (hazers tend to be 100% glycrerin, vapes mix that with some propylene glycol)

also i doubt CCC were using them but some hazers (primarily DF50s) are oil crackers

@benjojo (the DF50 produces a fantastically beautiful fine haze and also over a long time makes everything sticky in that way that anything kept in a kitchen becomes sticky)

@benjojo
For #38c3 I can add the fact that the venue was air conditioned to 20% humidity.
This can really drain your body an especially lips and nose.

@benjojo I have a very similar problem at CCH, but it started during buildup - no smoke machines running yet. I'm suspecting it's a general environment problem, dry air or so, but have no good evidence 🫤

@feuerrot @benjojo interesting... random googling gets me results along the lines of "40-60", "30-60" and "30-50" for healthy %rH ranges. This is definitely dipping out of the low end (and my breathways are not super healthy / sensitive 😥)

I knew your data existed but hadn't made the association to check in this regard, thanks!

@benjojo Maybe the very dry air at the cch is not helping ether.
I would try a nose spray with salt water. There a quite a few people at the cert with similar issues.

http://www.3d-meier.de/tut15/Seite304.html here are some additional Informations. Sadly in German.