Woods that should NOT be used for Snake Caging?

Hello,
I’m in the research stage of making a new cage, and since I know this can be important, I thought I should ask:

The cage walls (made of wood) will not be covered in some areas (actually, probably just the ceiling of the cage will be not be covered, since it won’t need moisture protection, etc.), so the snake will just be under the bare wood. Is there any species of wood I should avoid? I know herpers are advised against using cedar as bedding, so I’ll probably avoid this species, but
is there any other wood to avoid?

I certainly don’t want any wood that will have gasses that irritate a reptile’s sinuses, or something like that. I know that experts say not to use pine shaving either, but do you think will pine boards will be a problem?

Thanks very much I appreciate any feedback, as well as direction on where/how to find this out.
Regards,
Austin