E-fuels are still carbohydrates. You get the same issues of aromatic compounds that are left unburnt, or incomplete combustion leading to CO emissions.

If you would run the engine with a supply of pure oxygen instead of air you could avoid the NOx problems but that would be ridiculously expensive to do.

Really, the only issue e-fuels don't have is the sulphur content, but that is already pretty low in modern car fuels.

Hey, thanks for pointing out the difference in these two kinds of emergencies. I think having some sort of "field guide" is a very good idea, but I can't help finding the version you have provided very unclear and hard to navigate. There's a couple of things that I didn't get straightaway, and I'm sober at home and not out on a festival with someone on a bad trip near freaking me out.

On page one, you say: "Check for basics. Are they 10-20 breaths per minute."
That's not only very weird grammar, it's especially useless because you don't even tell me what to do with the info that "they are 20 breaths". Also, what are "arousal techniques"? You are talking to festival goers I assume, not medical professionals (because then you would not explain that regular breath is a vital sign)?

I think it would be helpful to say something like "First of all, make sure that people are physically safe. If one of these conditions is not met, you may have a medical emergency on hand, and you should get help". Give clear guidance.

Also, the drawing of a person in recovery position is not under the paragraph mentioning the recovery position, but under the CPR paragraph. That's just bad layout, and hard to navigate.

The second page suffers from some serious layout issues, too. Example: "Sitting, not guiding. You are the anchor..." should be one bullet point, not two. Press Shift-Enter for line breaks without starting a new list item.

The text could be more explanatory. Be not attached to the outcome. What is that supposed to mean? A short headline with a short instruction would be more helpful than some shorthand. For example:
"Talk through, not down.
A bad trip lasts as long as it does, you can't 'talk somebody down' or 'steer them in the right way'. Be supportive, be their anchor rather than trying to be their steering wheel"

"Breathing" on its own is also super unhelpful...

And lastly, the font you chose is fairly hard to read.

Sorry to rip your flyer apart like that, but I think it can be super helpful to people out their to have good information, hope the feedback can help in some way.

Keep up the good work!!