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Another one is Oleander, heard stories of people burning this off in incinerators and inhaling the smoke and getting very sick

https://pmc.ncbi.nlm.nih.gov/articles/PMC11946565/

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I was wondering if someone would mention this. I grew up in the Blue Ridge Mountains of NC and heard this all my life. Once had a camp councilor who would inspect every twig to make sure there was none burned.

I also burned Rhododendron wood in campfires and brush fires more times than I can count without any adverse effects that I know of. My back yard was completely overgrown with the stuff. I’m sure the smoke inhalation of any fire is worse for you than anything specific about rhododendrons.

https://outdoors.stackexchange.com/questions/7100/are-rhodod...

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You also don't want to burn poison ivy because the oil (urushiol) is not something you want in your lungs if you are reactive to it.
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Florida's manchineel tree (with the tiny apples) is the OG wood you don't burn because it blinds you.
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Or oleander [1], which people occasionally poison themselves with by burning its wood.

1: https://www.sciencedirect.com/topics/immunology-and-microbio...

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Fascinating. So it seems to have been used for parasitic and fungal skin treatments, angina, and to induce miscarriage. With no doubt a very narrow band of error.
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But you also don't touch it, eat it, or stand under it when it rains, so the opportunity to burn it by mistake is limited.
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You remind me of Episode 2 of the Apothecary Diaries: several Chinese troops were poisoned after eating local food. The food was fine, the wood used for fire and eating utensils was the source. I wonder if something like that ever actually happened?
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i believe ingestion is the primary concern, but the smoke can also lead to symptoms, yes.
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That makes sense. We definitely weren’t going to eat random plants, but we could have easily accidentally grabbed some for firewood or kindling.
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