During a Safety Moment by Sue Jilek, she offered a safety tip/warning: be cautious around different wood types. Some woods can be toxic and potentially unhealthy. As a result, she offers 2 charts on wood toxicity. Certainly, you may find other charts on line, but, these charts can certainly help you find out more about the hazards of using some woods.
These charts show what source in the wood causing the concern, and what reactions you might/could expect.